| /* |
| * builtin-trace.c |
| * |
| * Builtin 'trace' command: |
| * |
| * Display a continuously updated trace of any workload, CPU, specific PID, |
| * system wide, etc. Default format is loosely strace like, but any other |
| * event may be specified using --event. |
| * |
| * Copyright (C) 2012, 2013, 2014, 2015 Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> |
| * |
| * Initially based on the 'trace' prototype by Thomas Gleixner: |
| * |
| * http://lwn.net/Articles/415728/ ("Announcing a new utility: 'trace'") |
| * |
| * Released under the GPL v2. (and only v2, not any later version) |
| */ |
| |
| #include <traceevent/event-parse.h> |
| #include <api/fs/tracing_path.h> |
| #include "builtin.h" |
| #include "util/color.h" |
| #include "util/debug.h" |
| #include "util/evlist.h" |
| #include "util/exec_cmd.h" |
| #include "util/machine.h" |
| #include "util/session.h" |
| #include "util/thread.h" |
| #include "util/parse-options.h" |
| #include "util/strlist.h" |
| #include "util/intlist.h" |
| #include "util/thread_map.h" |
| #include "util/stat.h" |
| #include "trace-event.h" |
| #include "util/parse-events.h" |
| |
| #include <libaudit.h> |
| #include <stdlib.h> |
| #include <sys/mman.h> |
| #include <linux/futex.h> |
| #include <linux/err.h> |
| |
| /* For older distros: */ |
| #ifndef MAP_STACK |
| # define MAP_STACK 0x20000 |
| #endif |
| |
| #ifndef MADV_HWPOISON |
| # define MADV_HWPOISON 100 |
| |
| #endif |
| |
| #ifndef MADV_MERGEABLE |
| # define MADV_MERGEABLE 12 |
| #endif |
| |
| #ifndef MADV_UNMERGEABLE |
| # define MADV_UNMERGEABLE 13 |
| #endif |
| |
| #ifndef EFD_SEMAPHORE |
| # define EFD_SEMAPHORE 1 |
| #endif |
| |
| #ifndef EFD_NONBLOCK |
| # define EFD_NONBLOCK 00004000 |
| #endif |
| |
| #ifndef EFD_CLOEXEC |
| # define EFD_CLOEXEC 02000000 |
| #endif |
| |
| #ifndef O_CLOEXEC |
| # define O_CLOEXEC 02000000 |
| #endif |
| |
| #ifndef SOCK_DCCP |
| # define SOCK_DCCP 6 |
| #endif |
| |
| #ifndef SOCK_CLOEXEC |
| # define SOCK_CLOEXEC 02000000 |
| #endif |
| |
| #ifndef SOCK_NONBLOCK |
| # define SOCK_NONBLOCK 00004000 |
| #endif |
| |
| #ifndef MSG_CMSG_CLOEXEC |
| # define MSG_CMSG_CLOEXEC 0x40000000 |
| #endif |
| |
| #ifndef PERF_FLAG_FD_NO_GROUP |
| # define PERF_FLAG_FD_NO_GROUP (1UL << 0) |
| #endif |
| |
| #ifndef PERF_FLAG_FD_OUTPUT |
| # define PERF_FLAG_FD_OUTPUT (1UL << 1) |
| #endif |
| |
| #ifndef PERF_FLAG_PID_CGROUP |
| # define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */ |
| #endif |
| |
| #ifndef PERF_FLAG_FD_CLOEXEC |
| # define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */ |
| #endif |
| |
| |
| struct tp_field { |
| int offset; |
| union { |
| u64 (*integer)(struct tp_field *field, struct perf_sample *sample); |
| void *(*pointer)(struct tp_field *field, struct perf_sample *sample); |
| }; |
| }; |
| |
| #define TP_UINT_FIELD(bits) \ |
| static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \ |
| { \ |
| u##bits value; \ |
| memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \ |
| return value; \ |
| } |
| |
| TP_UINT_FIELD(8); |
| TP_UINT_FIELD(16); |
| TP_UINT_FIELD(32); |
| TP_UINT_FIELD(64); |
| |
| #define TP_UINT_FIELD__SWAPPED(bits) \ |
| static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \ |
| { \ |
| u##bits value; \ |
| memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \ |
| return bswap_##bits(value);\ |
| } |
| |
| TP_UINT_FIELD__SWAPPED(16); |
| TP_UINT_FIELD__SWAPPED(32); |
| TP_UINT_FIELD__SWAPPED(64); |
| |
| static int tp_field__init_uint(struct tp_field *field, |
| struct format_field *format_field, |
| bool needs_swap) |
| { |
| field->offset = format_field->offset; |
| |
| switch (format_field->size) { |
| case 1: |
| field->integer = tp_field__u8; |
| break; |
| case 2: |
| field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16; |
| break; |
| case 4: |
| field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32; |
| break; |
| case 8: |
| field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64; |
| break; |
| default: |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample) |
| { |
| return sample->raw_data + field->offset; |
| } |
| |
| static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field) |
| { |
| field->offset = format_field->offset; |
| field->pointer = tp_field__ptr; |
| return 0; |
| } |
| |
| struct syscall_tp { |
| struct tp_field id; |
| union { |
| struct tp_field args, ret; |
| }; |
| }; |
| |
| static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel, |
| struct tp_field *field, |
| const char *name) |
| { |
| struct format_field *format_field = perf_evsel__field(evsel, name); |
| |
| if (format_field == NULL) |
| return -1; |
| |
| return tp_field__init_uint(field, format_field, evsel->needs_swap); |
| } |
| |
| #define perf_evsel__init_sc_tp_uint_field(evsel, name) \ |
| ({ struct syscall_tp *sc = evsel->priv;\ |
| perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); }) |
| |
| static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel, |
| struct tp_field *field, |
| const char *name) |
| { |
| struct format_field *format_field = perf_evsel__field(evsel, name); |
| |
| if (format_field == NULL) |
| return -1; |
| |
| return tp_field__init_ptr(field, format_field); |
| } |
| |
| #define perf_evsel__init_sc_tp_ptr_field(evsel, name) \ |
| ({ struct syscall_tp *sc = evsel->priv;\ |
| perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); }) |
| |
| static void perf_evsel__delete_priv(struct perf_evsel *evsel) |
| { |
| zfree(&evsel->priv); |
| perf_evsel__delete(evsel); |
| } |
| |
| static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel, void *handler) |
| { |
| evsel->priv = malloc(sizeof(struct syscall_tp)); |
| if (evsel->priv != NULL) { |
| if (perf_evsel__init_sc_tp_uint_field(evsel, id)) |
| goto out_delete; |
| |
| evsel->handler = handler; |
| return 0; |
| } |
| |
| return -ENOMEM; |
| |
| out_delete: |
| zfree(&evsel->priv); |
| return -ENOENT; |
| } |
| |
| static struct perf_evsel *perf_evsel__syscall_newtp(const char *direction, void *handler) |
| { |
| struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction); |
| |
| /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */ |
| if (IS_ERR(evsel)) |
| evsel = perf_evsel__newtp("syscalls", direction); |
| |
| if (IS_ERR(evsel)) |
| return NULL; |
| |
| if (perf_evsel__init_syscall_tp(evsel, handler)) |
| goto out_delete; |
| |
| return evsel; |
| |
| out_delete: |
| perf_evsel__delete_priv(evsel); |
| return NULL; |
| } |
| |
| #define perf_evsel__sc_tp_uint(evsel, name, sample) \ |
| ({ struct syscall_tp *fields = evsel->priv; \ |
| fields->name.integer(&fields->name, sample); }) |
| |
| #define perf_evsel__sc_tp_ptr(evsel, name, sample) \ |
| ({ struct syscall_tp *fields = evsel->priv; \ |
| fields->name.pointer(&fields->name, sample); }) |
| |
| struct syscall_arg { |
| unsigned long val; |
| struct thread *thread; |
| struct trace *trace; |
| void *parm; |
| u8 idx; |
| u8 mask; |
| }; |
| |
| struct strarray { |
| int offset; |
| int nr_entries; |
| const char **entries; |
| }; |
| |
| #define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \ |
| .nr_entries = ARRAY_SIZE(array), \ |
| .entries = array, \ |
| } |
| |
| #define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \ |
| .offset = off, \ |
| .nr_entries = ARRAY_SIZE(array), \ |
| .entries = array, \ |
| } |
| |
| static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size, |
| const char *intfmt, |
| struct syscall_arg *arg) |
| { |
| struct strarray *sa = arg->parm; |
| int idx = arg->val - sa->offset; |
| |
| if (idx < 0 || idx >= sa->nr_entries) |
| return scnprintf(bf, size, intfmt, arg->val); |
| |
| return scnprintf(bf, size, "%s", sa->entries[idx]); |
| } |
| |
| static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg); |
| } |
| |
| #define SCA_STRARRAY syscall_arg__scnprintf_strarray |
| |
| #if defined(__i386__) || defined(__x86_64__) |
| /* |
| * FIXME: Make this available to all arches as soon as the ioctl beautifier |
| * gets rewritten to support all arches. |
| */ |
| static size_t syscall_arg__scnprintf_strhexarray(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| return __syscall_arg__scnprintf_strarray(bf, size, "%#x", arg); |
| } |
| |
| #define SCA_STRHEXARRAY syscall_arg__scnprintf_strhexarray |
| #endif /* defined(__i386__) || defined(__x86_64__) */ |
| |
| static size_t syscall_arg__scnprintf_fd(char *bf, size_t size, |
| struct syscall_arg *arg); |
| |
| #define SCA_FD syscall_arg__scnprintf_fd |
| |
| static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int fd = arg->val; |
| |
| if (fd == AT_FDCWD) |
| return scnprintf(bf, size, "CWD"); |
| |
| return syscall_arg__scnprintf_fd(bf, size, arg); |
| } |
| |
| #define SCA_FDAT syscall_arg__scnprintf_fd_at |
| |
| static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size, |
| struct syscall_arg *arg); |
| |
| #define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd |
| |
| static size_t syscall_arg__scnprintf_hex(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| return scnprintf(bf, size, "%#lx", arg->val); |
| } |
| |
| #define SCA_HEX syscall_arg__scnprintf_hex |
| |
| static size_t syscall_arg__scnprintf_int(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| return scnprintf(bf, size, "%d", arg->val); |
| } |
| |
| #define SCA_INT syscall_arg__scnprintf_int |
| |
| static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int printed = 0, prot = arg->val; |
| |
| if (prot == PROT_NONE) |
| return scnprintf(bf, size, "NONE"); |
| #define P_MMAP_PROT(n) \ |
| if (prot & PROT_##n) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ |
| prot &= ~PROT_##n; \ |
| } |
| |
| P_MMAP_PROT(EXEC); |
| P_MMAP_PROT(READ); |
| P_MMAP_PROT(WRITE); |
| #ifdef PROT_SEM |
| P_MMAP_PROT(SEM); |
| #endif |
| P_MMAP_PROT(GROWSDOWN); |
| P_MMAP_PROT(GROWSUP); |
| #undef P_MMAP_PROT |
| |
| if (prot) |
| printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", prot); |
| |
| return printed; |
| } |
| |
| #define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot |
| |
| static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int printed = 0, flags = arg->val; |
| |
| #define P_MMAP_FLAG(n) \ |
| if (flags & MAP_##n) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ |
| flags &= ~MAP_##n; \ |
| } |
| |
| P_MMAP_FLAG(SHARED); |
| P_MMAP_FLAG(PRIVATE); |
| #ifdef MAP_32BIT |
| P_MMAP_FLAG(32BIT); |
| #endif |
| P_MMAP_FLAG(ANONYMOUS); |
| P_MMAP_FLAG(DENYWRITE); |
| P_MMAP_FLAG(EXECUTABLE); |
| P_MMAP_FLAG(FILE); |
| P_MMAP_FLAG(FIXED); |
| P_MMAP_FLAG(GROWSDOWN); |
| #ifdef MAP_HUGETLB |
| P_MMAP_FLAG(HUGETLB); |
| #endif |
| P_MMAP_FLAG(LOCKED); |
| P_MMAP_FLAG(NONBLOCK); |
| P_MMAP_FLAG(NORESERVE); |
| P_MMAP_FLAG(POPULATE); |
| P_MMAP_FLAG(STACK); |
| #ifdef MAP_UNINITIALIZED |
| P_MMAP_FLAG(UNINITIALIZED); |
| #endif |
| #undef P_MMAP_FLAG |
| |
| if (flags) |
| printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); |
| |
| return printed; |
| } |
| |
| #define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags |
| |
| static size_t syscall_arg__scnprintf_mremap_flags(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int printed = 0, flags = arg->val; |
| |
| #define P_MREMAP_FLAG(n) \ |
| if (flags & MREMAP_##n) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ |
| flags &= ~MREMAP_##n; \ |
| } |
| |
| P_MREMAP_FLAG(MAYMOVE); |
| #ifdef MREMAP_FIXED |
| P_MREMAP_FLAG(FIXED); |
| #endif |
| #undef P_MREMAP_FLAG |
| |
| if (flags) |
| printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); |
| |
| return printed; |
| } |
| |
| #define SCA_MREMAP_FLAGS syscall_arg__scnprintf_mremap_flags |
| |
| static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int behavior = arg->val; |
| |
| switch (behavior) { |
| #define P_MADV_BHV(n) case MADV_##n: return scnprintf(bf, size, #n) |
| P_MADV_BHV(NORMAL); |
| P_MADV_BHV(RANDOM); |
| P_MADV_BHV(SEQUENTIAL); |
| P_MADV_BHV(WILLNEED); |
| P_MADV_BHV(DONTNEED); |
| P_MADV_BHV(REMOVE); |
| P_MADV_BHV(DONTFORK); |
| P_MADV_BHV(DOFORK); |
| P_MADV_BHV(HWPOISON); |
| #ifdef MADV_SOFT_OFFLINE |
| P_MADV_BHV(SOFT_OFFLINE); |
| #endif |
| P_MADV_BHV(MERGEABLE); |
| P_MADV_BHV(UNMERGEABLE); |
| #ifdef MADV_HUGEPAGE |
| P_MADV_BHV(HUGEPAGE); |
| #endif |
| #ifdef MADV_NOHUGEPAGE |
| P_MADV_BHV(NOHUGEPAGE); |
| #endif |
| #ifdef MADV_DONTDUMP |
| P_MADV_BHV(DONTDUMP); |
| #endif |
| #ifdef MADV_DODUMP |
| P_MADV_BHV(DODUMP); |
| #endif |
| #undef P_MADV_PHV |
| default: break; |
| } |
| |
| return scnprintf(bf, size, "%#x", behavior); |
| } |
| |
| #define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior |
| |
| static size_t syscall_arg__scnprintf_flock(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int printed = 0, op = arg->val; |
| |
| if (op == 0) |
| return scnprintf(bf, size, "NONE"); |
| #define P_CMD(cmd) \ |
| if ((op & LOCK_##cmd) == LOCK_##cmd) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #cmd); \ |
| op &= ~LOCK_##cmd; \ |
| } |
| |
| P_CMD(SH); |
| P_CMD(EX); |
| P_CMD(NB); |
| P_CMD(UN); |
| P_CMD(MAND); |
| P_CMD(RW); |
| P_CMD(READ); |
| P_CMD(WRITE); |
| #undef P_OP |
| |
| if (op) |
| printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", op); |
| |
| return printed; |
| } |
| |
| #define SCA_FLOCK syscall_arg__scnprintf_flock |
| |
| static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct syscall_arg *arg) |
| { |
| enum syscall_futex_args { |
| SCF_UADDR = (1 << 0), |
| SCF_OP = (1 << 1), |
| SCF_VAL = (1 << 2), |
| SCF_TIMEOUT = (1 << 3), |
| SCF_UADDR2 = (1 << 4), |
| SCF_VAL3 = (1 << 5), |
| }; |
| int op = arg->val; |
| int cmd = op & FUTEX_CMD_MASK; |
| size_t printed = 0; |
| |
| switch (cmd) { |
| #define P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, #n); |
| P_FUTEX_OP(WAIT); arg->mask |= SCF_VAL3|SCF_UADDR2; break; |
| P_FUTEX_OP(WAKE); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; |
| P_FUTEX_OP(FD); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; |
| P_FUTEX_OP(REQUEUE); arg->mask |= SCF_VAL3|SCF_TIMEOUT; break; |
| P_FUTEX_OP(CMP_REQUEUE); arg->mask |= SCF_TIMEOUT; break; |
| P_FUTEX_OP(CMP_REQUEUE_PI); arg->mask |= SCF_TIMEOUT; break; |
| P_FUTEX_OP(WAKE_OP); break; |
| P_FUTEX_OP(LOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; |
| P_FUTEX_OP(UNLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; |
| P_FUTEX_OP(TRYLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2; break; |
| P_FUTEX_OP(WAIT_BITSET); arg->mask |= SCF_UADDR2; break; |
| P_FUTEX_OP(WAKE_BITSET); arg->mask |= SCF_UADDR2; break; |
| P_FUTEX_OP(WAIT_REQUEUE_PI); break; |
| default: printed = scnprintf(bf, size, "%#x", cmd); break; |
| } |
| |
| if (op & FUTEX_PRIVATE_FLAG) |
| printed += scnprintf(bf + printed, size - printed, "|PRIV"); |
| |
| if (op & FUTEX_CLOCK_REALTIME) |
| printed += scnprintf(bf + printed, size - printed, "|CLKRT"); |
| |
| return printed; |
| } |
| |
| #define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op |
| |
| static const char *bpf_cmd[] = { |
| "MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM", |
| "MAP_GET_NEXT_KEY", "PROG_LOAD", |
| }; |
| static DEFINE_STRARRAY(bpf_cmd); |
| |
| static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", }; |
| static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1); |
| |
| static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", }; |
| static DEFINE_STRARRAY(itimers); |
| |
| static const char *keyctl_options[] = { |
| "GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN", |
| "SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ", |
| "INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT", |
| "ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT", |
| "INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT", |
| }; |
| static DEFINE_STRARRAY(keyctl_options); |
| |
| static const char *whences[] = { "SET", "CUR", "END", |
| #ifdef SEEK_DATA |
| "DATA", |
| #endif |
| #ifdef SEEK_HOLE |
| "HOLE", |
| #endif |
| }; |
| static DEFINE_STRARRAY(whences); |
| |
| static const char *fcntl_cmds[] = { |
| "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK", |
| "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "F_GETLK64", |
| "F_SETLK64", "F_SETLKW64", "F_SETOWN_EX", "F_GETOWN_EX", |
| "F_GETOWNER_UIDS", |
| }; |
| static DEFINE_STRARRAY(fcntl_cmds); |
| |
| static const char *rlimit_resources[] = { |
| "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE", |
| "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO", |
| "RTTIME", |
| }; |
| static DEFINE_STRARRAY(rlimit_resources); |
| |
| static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", }; |
| static DEFINE_STRARRAY(sighow); |
| |
| static const char *clockid[] = { |
| "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID", |
| "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME", |
| "REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI" |
| }; |
| static DEFINE_STRARRAY(clockid); |
| |
| static const char *socket_families[] = { |
| "UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM", |
| "BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI", |
| "SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC", |
| "RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC", |
| "BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF", |
| "ALG", "NFC", "VSOCK", |
| }; |
| static DEFINE_STRARRAY(socket_families); |
| |
| #ifndef SOCK_TYPE_MASK |
| #define SOCK_TYPE_MASK 0xf |
| #endif |
| |
| static size_t syscall_arg__scnprintf_socket_type(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| size_t printed; |
| int type = arg->val, |
| flags = type & ~SOCK_TYPE_MASK; |
| |
| type &= SOCK_TYPE_MASK; |
| /* |
| * Can't use a strarray, MIPS may override for ABI reasons. |
| */ |
| switch (type) { |
| #define P_SK_TYPE(n) case SOCK_##n: printed = scnprintf(bf, size, #n); break; |
| P_SK_TYPE(STREAM); |
| P_SK_TYPE(DGRAM); |
| P_SK_TYPE(RAW); |
| P_SK_TYPE(RDM); |
| P_SK_TYPE(SEQPACKET); |
| P_SK_TYPE(DCCP); |
| P_SK_TYPE(PACKET); |
| #undef P_SK_TYPE |
| default: |
| printed = scnprintf(bf, size, "%#x", type); |
| } |
| |
| #define P_SK_FLAG(n) \ |
| if (flags & SOCK_##n) { \ |
| printed += scnprintf(bf + printed, size - printed, "|%s", #n); \ |
| flags &= ~SOCK_##n; \ |
| } |
| |
| P_SK_FLAG(CLOEXEC); |
| P_SK_FLAG(NONBLOCK); |
| #undef P_SK_FLAG |
| |
| if (flags) |
| printed += scnprintf(bf + printed, size - printed, "|%#x", flags); |
| |
| return printed; |
| } |
| |
| #define SCA_SK_TYPE syscall_arg__scnprintf_socket_type |
| |
| #ifndef MSG_PROBE |
| #define MSG_PROBE 0x10 |
| #endif |
| #ifndef MSG_WAITFORONE |
| #define MSG_WAITFORONE 0x10000 |
| #endif |
| #ifndef MSG_SENDPAGE_NOTLAST |
| #define MSG_SENDPAGE_NOTLAST 0x20000 |
| #endif |
| #ifndef MSG_FASTOPEN |
| #define MSG_FASTOPEN 0x20000000 |
| #endif |
| |
| static size_t syscall_arg__scnprintf_msg_flags(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int printed = 0, flags = arg->val; |
| |
| if (flags == 0) |
| return scnprintf(bf, size, "NONE"); |
| #define P_MSG_FLAG(n) \ |
| if (flags & MSG_##n) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ |
| flags &= ~MSG_##n; \ |
| } |
| |
| P_MSG_FLAG(OOB); |
| P_MSG_FLAG(PEEK); |
| P_MSG_FLAG(DONTROUTE); |
| P_MSG_FLAG(TRYHARD); |
| P_MSG_FLAG(CTRUNC); |
| P_MSG_FLAG(PROBE); |
| P_MSG_FLAG(TRUNC); |
| P_MSG_FLAG(DONTWAIT); |
| P_MSG_FLAG(EOR); |
| P_MSG_FLAG(WAITALL); |
| P_MSG_FLAG(FIN); |
| P_MSG_FLAG(SYN); |
| P_MSG_FLAG(CONFIRM); |
| P_MSG_FLAG(RST); |
| P_MSG_FLAG(ERRQUEUE); |
| P_MSG_FLAG(NOSIGNAL); |
| P_MSG_FLAG(MORE); |
| P_MSG_FLAG(WAITFORONE); |
| P_MSG_FLAG(SENDPAGE_NOTLAST); |
| P_MSG_FLAG(FASTOPEN); |
| P_MSG_FLAG(CMSG_CLOEXEC); |
| #undef P_MSG_FLAG |
| |
| if (flags) |
| printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); |
| |
| return printed; |
| } |
| |
| #define SCA_MSG_FLAGS syscall_arg__scnprintf_msg_flags |
| |
| static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| size_t printed = 0; |
| int mode = arg->val; |
| |
| if (mode == F_OK) /* 0 */ |
| return scnprintf(bf, size, "F"); |
| #define P_MODE(n) \ |
| if (mode & n##_OK) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s", #n); \ |
| mode &= ~n##_OK; \ |
| } |
| |
| P_MODE(R); |
| P_MODE(W); |
| P_MODE(X); |
| #undef P_MODE |
| |
| if (mode) |
| printed += scnprintf(bf + printed, size - printed, "|%#x", mode); |
| |
| return printed; |
| } |
| |
| #define SCA_ACCMODE syscall_arg__scnprintf_access_mode |
| |
| static size_t syscall_arg__scnprintf_filename(char *bf, size_t size, |
| struct syscall_arg *arg); |
| |
| #define SCA_FILENAME syscall_arg__scnprintf_filename |
| |
| static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int printed = 0, flags = arg->val; |
| |
| if (!(flags & O_CREAT)) |
| arg->mask |= 1 << (arg->idx + 1); /* Mask the mode parm */ |
| |
| if (flags == 0) |
| return scnprintf(bf, size, "RDONLY"); |
| #define P_FLAG(n) \ |
| if (flags & O_##n) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ |
| flags &= ~O_##n; \ |
| } |
| |
| P_FLAG(APPEND); |
| P_FLAG(ASYNC); |
| P_FLAG(CLOEXEC); |
| P_FLAG(CREAT); |
| P_FLAG(DIRECT); |
| P_FLAG(DIRECTORY); |
| P_FLAG(EXCL); |
| P_FLAG(LARGEFILE); |
| P_FLAG(NOATIME); |
| P_FLAG(NOCTTY); |
| #ifdef O_NONBLOCK |
| P_FLAG(NONBLOCK); |
| #elif O_NDELAY |
| P_FLAG(NDELAY); |
| #endif |
| #ifdef O_PATH |
| P_FLAG(PATH); |
| #endif |
| P_FLAG(RDWR); |
| #ifdef O_DSYNC |
| if ((flags & O_SYNC) == O_SYNC) |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", "SYNC"); |
| else { |
| P_FLAG(DSYNC); |
| } |
| #else |
| P_FLAG(SYNC); |
| #endif |
| P_FLAG(TRUNC); |
| P_FLAG(WRONLY); |
| #undef P_FLAG |
| |
| if (flags) |
| printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); |
| |
| return printed; |
| } |
| |
| #define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags |
| |
| static size_t syscall_arg__scnprintf_perf_flags(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int printed = 0, flags = arg->val; |
| |
| if (flags == 0) |
| return 0; |
| |
| #define P_FLAG(n) \ |
| if (flags & PERF_FLAG_##n) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ |
| flags &= ~PERF_FLAG_##n; \ |
| } |
| |
| P_FLAG(FD_NO_GROUP); |
| P_FLAG(FD_OUTPUT); |
| P_FLAG(PID_CGROUP); |
| P_FLAG(FD_CLOEXEC); |
| #undef P_FLAG |
| |
| if (flags) |
| printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); |
| |
| return printed; |
| } |
| |
| #define SCA_PERF_FLAGS syscall_arg__scnprintf_perf_flags |
| |
| static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int printed = 0, flags = arg->val; |
| |
| if (flags == 0) |
| return scnprintf(bf, size, "NONE"); |
| #define P_FLAG(n) \ |
| if (flags & EFD_##n) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ |
| flags &= ~EFD_##n; \ |
| } |
| |
| P_FLAG(SEMAPHORE); |
| P_FLAG(CLOEXEC); |
| P_FLAG(NONBLOCK); |
| #undef P_FLAG |
| |
| if (flags) |
| printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); |
| |
| return printed; |
| } |
| |
| #define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags |
| |
| static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int printed = 0, flags = arg->val; |
| |
| #define P_FLAG(n) \ |
| if (flags & O_##n) { \ |
| printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ |
| flags &= ~O_##n; \ |
| } |
| |
| P_FLAG(CLOEXEC); |
| P_FLAG(NONBLOCK); |
| #undef P_FLAG |
| |
| if (flags) |
| printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); |
| |
| return printed; |
| } |
| |
| #define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags |
| |
| static size_t syscall_arg__scnprintf_signum(char *bf, size_t size, struct syscall_arg *arg) |
| { |
| int sig = arg->val; |
| |
| switch (sig) { |
| #define P_SIGNUM(n) case SIG##n: return scnprintf(bf, size, #n) |
| P_SIGNUM(HUP); |
| P_SIGNUM(INT); |
| P_SIGNUM(QUIT); |
| P_SIGNUM(ILL); |
| P_SIGNUM(TRAP); |
| P_SIGNUM(ABRT); |
| P_SIGNUM(BUS); |
| P_SIGNUM(FPE); |
| P_SIGNUM(KILL); |
| P_SIGNUM(USR1); |
| P_SIGNUM(SEGV); |
| P_SIGNUM(USR2); |
| P_SIGNUM(PIPE); |
| P_SIGNUM(ALRM); |
| P_SIGNUM(TERM); |
| P_SIGNUM(CHLD); |
| P_SIGNUM(CONT); |
| P_SIGNUM(STOP); |
| P_SIGNUM(TSTP); |
| P_SIGNUM(TTIN); |
| P_SIGNUM(TTOU); |
| P_SIGNUM(URG); |
| P_SIGNUM(XCPU); |
| P_SIGNUM(XFSZ); |
| P_SIGNUM(VTALRM); |
| P_SIGNUM(PROF); |
| P_SIGNUM(WINCH); |
| P_SIGNUM(IO); |
| P_SIGNUM(PWR); |
| P_SIGNUM(SYS); |
| #ifdef SIGEMT |
| P_SIGNUM(EMT); |
| #endif |
| #ifdef SIGSTKFLT |
| P_SIGNUM(STKFLT); |
| #endif |
| #ifdef SIGSWI |
| P_SIGNUM(SWI); |
| #endif |
| default: break; |
| } |
| |
| return scnprintf(bf, size, "%#x", sig); |
| } |
| |
| #define SCA_SIGNUM syscall_arg__scnprintf_signum |
| |
| #if defined(__i386__) || defined(__x86_64__) |
| /* |
| * FIXME: Make this available to all arches. |
| */ |
| #define TCGETS 0x5401 |
| |
| static const char *tioctls[] = { |
| "TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW", |
| "TCSETAF", "TCSBRK", "TCXONC", "TCFLSH", "TIOCEXCL", "TIOCNXCL", |
| "TIOCSCTTY", "TIOCGPGRP", "TIOCSPGRP", "TIOCOUTQ", "TIOCSTI", |
| "TIOCGWINSZ", "TIOCSWINSZ", "TIOCMGET", "TIOCMBIS", "TIOCMBIC", |
| "TIOCMSET", "TIOCGSOFTCAR", "TIOCSSOFTCAR", "FIONREAD", "TIOCLINUX", |
| "TIOCCONS", "TIOCGSERIAL", "TIOCSSERIAL", "TIOCPKT", "FIONBIO", |
| "TIOCNOTTY", "TIOCSETD", "TIOCGETD", "TCSBRKP", [0x27] = "TIOCSBRK", |
| "TIOCCBRK", "TIOCGSID", "TCGETS2", "TCSETS2", "TCSETSW2", "TCSETSF2", |
| "TIOCGRS485", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK", |
| "TIOCGDEV||TCGETX", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG", |
| "TIOCVHANGUP", "TIOCGPKT", "TIOCGPTLCK", "TIOCGEXCL", |
| [0x50] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG", |
| "TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS", |
| "TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI", |
| "TIOCMIWAIT", "TIOCGICOUNT", [0x60] = "FIOQSIZE", |
| }; |
| |
| static DEFINE_STRARRAY_OFFSET(tioctls, 0x5401); |
| #endif /* defined(__i386__) || defined(__x86_64__) */ |
| |
| #define STRARRAY(arg, name, array) \ |
| .arg_scnprintf = { [arg] = SCA_STRARRAY, }, \ |
| .arg_parm = { [arg] = &strarray__##array, } |
| |
| static struct syscall_fmt { |
| const char *name; |
| const char *alias; |
| size_t (*arg_scnprintf[6])(char *bf, size_t size, struct syscall_arg *arg); |
| void *arg_parm[6]; |
| bool errmsg; |
| bool timeout; |
| bool hexret; |
| } syscall_fmts[] = { |
| { .name = "access", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ |
| [1] = SCA_ACCMODE, /* mode */ }, }, |
| { .name = "arch_prctl", .errmsg = true, .alias = "prctl", }, |
| { .name = "bpf", .errmsg = true, STRARRAY(0, cmd, bpf_cmd), }, |
| { .name = "brk", .hexret = true, |
| .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, }, |
| { .name = "chdir", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "chmod", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "chroot", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), }, |
| { .name = "close", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, }, |
| { .name = "connect", .errmsg = true, }, |
| { .name = "creat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "dup", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "dup2", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "dup3", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), }, |
| { .name = "eventfd2", .errmsg = true, |
| .arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, }, |
| { .name = "faccessat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ |
| [1] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "fadvise64", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "fallocate", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "fchdir", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "fchmod", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "fchmodat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ |
| [1] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "fchown", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "fchownat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ |
| [1] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "fcntl", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| [1] = SCA_STRARRAY, /* cmd */ }, |
| .arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, }, |
| { .name = "fdatasync", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "flock", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| [1] = SCA_FLOCK, /* cmd */ }, }, |
| { .name = "fsetxattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "fstat", .errmsg = true, .alias = "newfstat", |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "fstatat", .errmsg = true, .alias = "newfstatat", |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ |
| [1] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "fstatfs", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "fsync", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "ftruncate", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "futex", .errmsg = true, |
| .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, }, |
| { .name = "futimesat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ |
| [1] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "getdents", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "getdents64", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "getitimer", .errmsg = true, STRARRAY(0, which, itimers), }, |
| { .name = "getrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, |
| { .name = "getxattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "inotify_add_watch", .errmsg = true, |
| .arg_scnprintf = { [1] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "ioctl", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| #if defined(__i386__) || defined(__x86_64__) |
| /* |
| * FIXME: Make this available to all arches. |
| */ |
| [1] = SCA_STRHEXARRAY, /* cmd */ |
| [2] = SCA_HEX, /* arg */ }, |
| .arg_parm = { [1] = &strarray__tioctls, /* cmd */ }, }, |
| #else |
| [2] = SCA_HEX, /* arg */ }, }, |
| #endif |
| { .name = "keyctl", .errmsg = true, STRARRAY(0, option, keyctl_options), }, |
| { .name = "kill", .errmsg = true, |
| .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, |
| { .name = "lchown", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "lgetxattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "linkat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, |
| { .name = "listxattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "llistxattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "lremovexattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "lseek", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| [2] = SCA_STRARRAY, /* whence */ }, |
| .arg_parm = { [2] = &strarray__whences, /* whence */ }, }, |
| { .name = "lsetxattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "lstat", .errmsg = true, .alias = "newlstat", |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "lsxattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "madvise", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_HEX, /* start */ |
| [2] = SCA_MADV_BHV, /* behavior */ }, }, |
| { .name = "mkdir", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "mkdirat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ |
| [1] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "mknod", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "mknodat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ |
| [1] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "mlock", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, |
| { .name = "mlockall", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, |
| { .name = "mmap", .hexret = true, |
| .arg_scnprintf = { [0] = SCA_HEX, /* addr */ |
| [2] = SCA_MMAP_PROT, /* prot */ |
| [3] = SCA_MMAP_FLAGS, /* flags */ |
| [4] = SCA_FD, /* fd */ }, }, |
| { .name = "mprotect", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_HEX, /* start */ |
| [2] = SCA_MMAP_PROT, /* prot */ }, }, |
| { .name = "mq_unlink", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* u_name */ }, }, |
| { .name = "mremap", .hexret = true, |
| .arg_scnprintf = { [0] = SCA_HEX, /* addr */ |
| [3] = SCA_MREMAP_FLAGS, /* flags */ |
| [4] = SCA_HEX, /* new_addr */ }, }, |
| { .name = "munlock", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, |
| { .name = "munmap", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, |
| { .name = "name_to_handle_at", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, |
| { .name = "newfstatat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ |
| [1] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "open", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ |
| [1] = SCA_OPEN_FLAGS, /* flags */ }, }, |
| { .name = "open_by_handle_at", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ |
| [2] = SCA_OPEN_FLAGS, /* flags */ }, }, |
| { .name = "openat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ |
| [1] = SCA_FILENAME, /* filename */ |
| [2] = SCA_OPEN_FLAGS, /* flags */ }, }, |
| { .name = "perf_event_open", .errmsg = true, |
| .arg_scnprintf = { [1] = SCA_INT, /* pid */ |
| [2] = SCA_INT, /* cpu */ |
| [3] = SCA_FD, /* group_fd */ |
| [4] = SCA_PERF_FLAGS, /* flags */ }, }, |
| { .name = "pipe2", .errmsg = true, |
| .arg_scnprintf = { [1] = SCA_PIPE_FLAGS, /* flags */ }, }, |
| { .name = "poll", .errmsg = true, .timeout = true, }, |
| { .name = "ppoll", .errmsg = true, .timeout = true, }, |
| { .name = "pread", .errmsg = true, .alias = "pread64", |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "preadv", .errmsg = true, .alias = "pread", |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "prlimit64", .errmsg = true, STRARRAY(1, resource, rlimit_resources), }, |
| { .name = "pwrite", .errmsg = true, .alias = "pwrite64", |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "pwritev", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "read", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "readlink", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, }, |
| { .name = "readlinkat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ |
| [1] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "readv", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "recvfrom", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| [3] = SCA_MSG_FLAGS, /* flags */ }, }, |
| { .name = "recvmmsg", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| [3] = SCA_MSG_FLAGS, /* flags */ }, }, |
| { .name = "recvmsg", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| [2] = SCA_MSG_FLAGS, /* flags */ }, }, |
| { .name = "removexattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "renameat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, |
| { .name = "rmdir", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "rt_sigaction", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_SIGNUM, /* sig */ }, }, |
| { .name = "rt_sigprocmask", .errmsg = true, STRARRAY(0, how, sighow), }, |
| { .name = "rt_sigqueueinfo", .errmsg = true, |
| .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, |
| { .name = "rt_tgsigqueueinfo", .errmsg = true, |
| .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, }, |
| { .name = "select", .errmsg = true, .timeout = true, }, |
| { .name = "sendmmsg", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| [3] = SCA_MSG_FLAGS, /* flags */ }, }, |
| { .name = "sendmsg", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| [2] = SCA_MSG_FLAGS, /* flags */ }, }, |
| { .name = "sendto", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ |
| [3] = SCA_MSG_FLAGS, /* flags */ }, }, |
| { .name = "setitimer", .errmsg = true, STRARRAY(0, which, itimers), }, |
| { .name = "setrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, |
| { .name = "setxattr", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "shutdown", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "socket", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */ |
| [1] = SCA_SK_TYPE, /* type */ }, |
| .arg_parm = { [0] = &strarray__socket_families, /* family */ }, }, |
| { .name = "socketpair", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */ |
| [1] = SCA_SK_TYPE, /* type */ }, |
| .arg_parm = { [0] = &strarray__socket_families, /* family */ }, }, |
| { .name = "stat", .errmsg = true, .alias = "newstat", |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "statfs", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "swapoff", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, }, |
| { .name = "swapon", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, }, |
| { .name = "symlinkat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, |
| { .name = "tgkill", .errmsg = true, |
| .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, }, |
| { .name = "tkill", .errmsg = true, |
| .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, |
| { .name = "truncate", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, }, |
| { .name = "uname", .errmsg = true, .alias = "newuname", }, |
| { .name = "unlinkat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ |
| [1] = SCA_FILENAME, /* pathname */ }, }, |
| { .name = "utime", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "utimensat", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */ |
| [1] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "utimes", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, |
| { .name = "vmsplice", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "write", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| { .name = "writev", .errmsg = true, |
| .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, |
| }; |
| |
| static int syscall_fmt__cmp(const void *name, const void *fmtp) |
| { |
| const struct syscall_fmt *fmt = fmtp; |
| return strcmp(name, fmt->name); |
| } |
| |
| static struct syscall_fmt *syscall_fmt__find(const char *name) |
| { |
| const int nmemb = ARRAY_SIZE(syscall_fmts); |
| return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp); |
| } |
| |
| struct syscall { |
| struct event_format *tp_format; |
| int nr_args; |
| struct format_field *args; |
| const char *name; |
| bool is_exit; |
| struct syscall_fmt *fmt; |
| size_t (**arg_scnprintf)(char *bf, size_t size, struct syscall_arg *arg); |
| void **arg_parm; |
| }; |
| |
| static size_t fprintf_duration(unsigned long t, FILE *fp) |
| { |
| double duration = (double)t / NSEC_PER_MSEC; |
| size_t printed = fprintf(fp, "("); |
| |
| if (duration >= 1.0) |
| printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration); |
| else if (duration >= 0.01) |
| printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration); |
| else |
| printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration); |
| return printed + fprintf(fp, "): "); |
| } |
| |
| /** |
| * filename.ptr: The filename char pointer that will be vfs_getname'd |
| * filename.entry_str_pos: Where to insert the string translated from |
| * filename.ptr by the vfs_getname tracepoint/kprobe. |
| */ |
| struct thread_trace { |
| u64 entry_time; |
| u64 exit_time; |
| bool entry_pending; |
| unsigned long nr_events; |
| unsigned long pfmaj, pfmin; |
| char *entry_str; |
| double runtime_ms; |
| struct { |
| unsigned long ptr; |
| short int entry_str_pos; |
| bool pending_open; |
| unsigned int namelen; |
| char *name; |
| } filename; |
| struct { |
| int max; |
| char **table; |
| } paths; |
| |
| struct intlist *syscall_stats; |
| }; |
| |
| static struct thread_trace *thread_trace__new(void) |
| { |
| struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace)); |
| |
| if (ttrace) |
| ttrace->paths.max = -1; |
| |
| ttrace->syscall_stats = intlist__new(NULL); |
| |
| return ttrace; |
| } |
| |
| static struct thread_trace *thread__trace(struct thread *thread, FILE *fp) |
| { |
| struct thread_trace *ttrace; |
| |
| if (thread == NULL) |
| goto fail; |
| |
| if (thread__priv(thread) == NULL) |
| thread__set_priv(thread, thread_trace__new()); |
| |
| if (thread__priv(thread) == NULL) |
| goto fail; |
| |
| ttrace = thread__priv(thread); |
| ++ttrace->nr_events; |
| |
| return ttrace; |
| fail: |
| color_fprintf(fp, PERF_COLOR_RED, |
| "WARNING: not enough memory, dropping samples!\n"); |
| return NULL; |
| } |
| |
| #define TRACE_PFMAJ (1 << 0) |
| #define TRACE_PFMIN (1 << 1) |
| |
| static const size_t trace__entry_str_size = 2048; |
| |
| struct trace { |
| struct perf_tool tool; |
| struct { |
| int machine; |
| int open_id; |
| } audit; |
| struct { |
| int max; |
| struct syscall *table; |
| struct { |
| struct perf_evsel *sys_enter, |
| *sys_exit; |
| } events; |
| } syscalls; |
| struct record_opts opts; |
| struct perf_evlist *evlist; |
| struct machine *host; |
| struct thread *current; |
| u64 base_time; |
| FILE *output; |
| unsigned long nr_events; |
| struct strlist *ev_qualifier; |
| struct { |
| size_t nr; |
| int *entries; |
| } ev_qualifier_ids; |
| struct intlist *tid_list; |
| struct intlist *pid_list; |
| struct { |
| size_t nr; |
| pid_t *entries; |
| } filter_pids; |
| double duration_filter; |
| double runtime_ms; |
| struct { |
| u64 vfs_getname, |
| proc_getname; |
| } stats; |
| bool not_ev_qualifier; |
| bool live; |
| bool full_time; |
| bool sched; |
| bool multiple_threads; |
| bool summary; |
| bool summary_only; |
| bool show_comm; |
| bool show_tool_stats; |
| bool trace_syscalls; |
| bool force; |
| bool vfs_getname; |
| int trace_pgfaults; |
| }; |
| |
| static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname) |
| { |
| struct thread_trace *ttrace = thread__priv(thread); |
| |
| if (fd > ttrace->paths.max) { |
| char **npath = realloc(ttrace->paths.table, (fd + 1) * sizeof(char *)); |
| |
| if (npath == NULL) |
| return -1; |
| |
| if (ttrace->paths.max != -1) { |
| memset(npath + ttrace->paths.max + 1, 0, |
| (fd - ttrace->paths.max) * sizeof(char *)); |
| } else { |
| memset(npath, 0, (fd + 1) * sizeof(char *)); |
| } |
| |
| ttrace->paths.table = npath; |
| ttrace->paths.max = fd; |
| } |
| |
| ttrace->paths.table[fd] = strdup(pathname); |
| |
| return ttrace->paths.table[fd] != NULL ? 0 : -1; |
| } |
| |
| static int thread__read_fd_path(struct thread *thread, int fd) |
| { |
| char linkname[PATH_MAX], pathname[PATH_MAX]; |
| struct stat st; |
| int ret; |
| |
| if (thread->pid_ == thread->tid) { |
| scnprintf(linkname, sizeof(linkname), |
| "/proc/%d/fd/%d", thread->pid_, fd); |
| } else { |
| scnprintf(linkname, sizeof(linkname), |
| "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd); |
| } |
| |
| if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname)) |
| return -1; |
| |
| ret = readlink(linkname, pathname, sizeof(pathname)); |
| |
| if (ret < 0 || ret > st.st_size) |
| return -1; |
| |
| pathname[ret] = '\0'; |
| return trace__set_fd_pathname(thread, fd, pathname); |
| } |
| |
| static const char *thread__fd_path(struct thread *thread, int fd, |
| struct trace *trace) |
| { |
| struct thread_trace *ttrace = thread__priv(thread); |
| |
| if (ttrace == NULL) |
| return NULL; |
| |
| if (fd < 0) |
| return NULL; |
| |
| if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL)) { |
| if (!trace->live) |
| return NULL; |
| ++trace->stats.proc_getname; |
| if (thread__read_fd_path(thread, fd)) |
| return NULL; |
| } |
| |
| return ttrace->paths.table[fd]; |
| } |
| |
| static size_t syscall_arg__scnprintf_fd(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int fd = arg->val; |
| size_t printed = scnprintf(bf, size, "%d", fd); |
| const char *path = thread__fd_path(arg->thread, fd, arg->trace); |
| |
| if (path) |
| printed += scnprintf(bf + printed, size - printed, "<%s>", path); |
| |
| return printed; |
| } |
| |
| static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| int fd = arg->val; |
| size_t printed = syscall_arg__scnprintf_fd(bf, size, arg); |
| struct thread_trace *ttrace = thread__priv(arg->thread); |
| |
| if (ttrace && fd >= 0 && fd <= ttrace->paths.max) |
| zfree(&ttrace->paths.table[fd]); |
| |
| return printed; |
| } |
| |
| static void thread__set_filename_pos(struct thread *thread, const char *bf, |
| unsigned long ptr) |
| { |
| struct thread_trace *ttrace = thread__priv(thread); |
| |
| ttrace->filename.ptr = ptr; |
| ttrace->filename.entry_str_pos = bf - ttrace->entry_str; |
| } |
| |
| static size_t syscall_arg__scnprintf_filename(char *bf, size_t size, |
| struct syscall_arg *arg) |
| { |
| unsigned long ptr = arg->val; |
| |
| if (!arg->trace->vfs_getname) |
| return scnprintf(bf, size, "%#x", ptr); |
| |
| thread__set_filename_pos(arg->thread, bf, ptr); |
| return 0; |
| } |
| |
| static bool trace__filter_duration(struct trace *trace, double t) |
| { |
| return t < (trace->duration_filter * NSEC_PER_MSEC); |
| } |
| |
| static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp) |
| { |
| double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC; |
| |
| return fprintf(fp, "%10.3f ", ts); |
| } |
| |
| static bool done = false; |
| static bool interrupted = false; |
| |
| static void sig_handler(int sig) |
| { |
| done = true; |
| interrupted = sig == SIGINT; |
| } |
| |
| static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread, |
| u64 duration, u64 tstamp, FILE *fp) |
| { |
| size_t printed = trace__fprintf_tstamp(trace, tstamp, fp); |
| printed += fprintf_duration(duration, fp); |
| |
| if (trace->multiple_threads) { |
| if (trace->show_comm) |
| printed += fprintf(fp, "%.14s/", thread__comm_str(thread)); |
| printed += fprintf(fp, "%d ", thread->tid); |
| } |
| |
| return printed; |
| } |
| |
| static int trace__process_event(struct trace *trace, struct machine *machine, |
| union perf_event *event, struct perf_sample *sample) |
| { |
| int ret = 0; |
| |
| switch (event->header.type) { |
| case PERF_RECORD_LOST: |
| color_fprintf(trace->output, PERF_COLOR_RED, |
| "LOST %" PRIu64 " events!\n", event->lost.lost); |
| ret = machine__process_lost_event(machine, event, sample); |
| default: |
| ret = machine__process_event(machine, event, sample); |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static int trace__tool_process(struct perf_tool *tool, |
| union perf_event *event, |
| struct perf_sample *sample, |
| struct machine *machine) |
| { |
| struct trace *trace = container_of(tool, struct trace, tool); |
| return trace__process_event(trace, machine, event, sample); |
| } |
| |
| static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist) |
| { |
| int err = symbol__init(NULL); |
| |
| if (err) |
| return err; |
| |
| trace->host = machine__new_host(); |
| if (trace->host == NULL) |
| return -ENOMEM; |
| |
| if (trace_event__register_resolver(trace->host, machine__resolve_kernel_addr) < 0) |
| return -errno; |
| |
| err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target, |
| evlist->threads, trace__tool_process, false, |
| trace->opts.proc_map_timeout); |
| if (err) |
| symbol__exit(); |
| |
| return err; |
| } |
| |
| static int syscall__set_arg_fmts(struct syscall *sc) |
| { |
| struct format_field *field; |
| int idx = 0; |
| |
| sc->arg_scnprintf = calloc(sc->nr_args, sizeof(void *)); |
| if (sc->arg_scnprintf == NULL) |
| return -1; |
| |
| if (sc->fmt) |
| sc->arg_parm = sc->fmt->arg_parm; |
| |
| for (field = sc->args; field; field = field->next) { |
| if (sc->fmt && sc->fmt->arg_scnprintf[idx]) |
| sc->arg_scnprintf[idx] = sc->fmt->arg_scnprintf[idx]; |
| else if (field->flags & FIELD_IS_POINTER) |
| sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex; |
| ++idx; |
| } |
| |
| return 0; |
| } |
| |
| static int trace__read_syscall_info(struct trace *trace, int id) |
| { |
| char tp_name[128]; |
| struct syscall *sc; |
| const char *name = audit_syscall_to_name(id, trace->audit.machine); |
| |
| if (name == NULL) |
| return -1; |
| |
| if (id > trace->syscalls.max) { |
| struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc)); |
| |
| if (nsyscalls == NULL) |
| return -1; |
| |
| if (trace->syscalls.max != -1) { |
| memset(nsyscalls + trace->syscalls.max + 1, 0, |
| (id - trace->syscalls.max) * sizeof(*sc)); |
| } else { |
| memset(nsyscalls, 0, (id + 1) * sizeof(*sc)); |
| } |
| |
| trace->syscalls.table = nsyscalls; |
| trace->syscalls.max = id; |
| } |
| |
| sc = trace->syscalls.table + id; |
| sc->name = name; |
| |
| sc->fmt = syscall_fmt__find(sc->name); |
| |
| snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name); |
| sc->tp_format = trace_event__tp_format("syscalls", tp_name); |
| |
| if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) { |
| snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias); |
| sc->tp_format = trace_event__tp_format("syscalls", tp_name); |
| } |
| |
| if (IS_ERR(sc->tp_format)) |
| return -1; |
| |
| sc->args = sc->tp_format->format.fields; |
| sc->nr_args = sc->tp_format->format.nr_fields; |
| /* drop nr field - not relevant here; does not exist on older kernels */ |
| if (sc->args && strcmp(sc->args->name, "nr") == 0) { |
| sc->args = sc->args->next; |
| --sc->nr_args; |
| } |
| |
| sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit"); |
| |
| return syscall__set_arg_fmts(sc); |
| } |
| |
| static int trace__validate_ev_qualifier(struct trace *trace) |
| { |
| int err = 0, i; |
| struct str_node *pos; |
| |
| trace->ev_qualifier_ids.nr = strlist__nr_entries(trace->ev_qualifier); |
| trace->ev_qualifier_ids.entries = malloc(trace->ev_qualifier_ids.nr * |
| sizeof(trace->ev_qualifier_ids.entries[0])); |
| |
| if (trace->ev_qualifier_ids.entries == NULL) { |
| fputs("Error:\tNot enough memory for allocating events qualifier ids\n", |
| trace->output); |
| err = -EINVAL; |
| goto out; |
| } |
| |
| i = 0; |
| |
| strlist__for_each(pos, trace->ev_qualifier) { |
| const char *sc = pos->s; |
| int id = audit_name_to_syscall(sc, trace->audit.machine); |
| |
| if (id < 0) { |
| if (err == 0) { |
| fputs("Error:\tInvalid syscall ", trace->output); |
| err = -EINVAL; |
| } else { |
| fputs(", ", trace->output); |
| } |
| |
| fputs(sc, trace->output); |
| } |
| |
| trace->ev_qualifier_ids.entries[i++] = id; |
| } |
| |
| if (err < 0) { |
| fputs("\nHint:\ttry 'perf list syscalls:sys_enter_*'" |
| "\nHint:\tand: 'man syscalls'\n", trace->output); |
| zfree(&trace->ev_qualifier_ids.entries); |
| trace->ev_qualifier_ids.nr = 0; |
| } |
| out: |
| return err; |
| } |
| |
| /* |
| * args is to be interpreted as a series of longs but we need to handle |
| * 8-byte unaligned accesses. args points to raw_data within the event |
| * and raw_data is guaranteed to be 8-byte unaligned because it is |
| * preceded by raw_size which is a u32. So we need to copy args to a temp |
| * variable to read it. Most notably this avoids extended load instructions |
| * on unaligned addresses |
| */ |
| |
| static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size, |
| unsigned char *args, struct trace *trace, |
| struct thread *thread) |
| { |
| size_t printed = 0; |
| unsigned char *p; |
| unsigned long val; |
| |
| if (sc->args != NULL) { |
| struct format_field *field; |
| u8 bit = 1; |
| struct syscall_arg arg = { |
| .idx = 0, |
| .mask = 0, |
| .trace = trace, |
| .thread = thread, |
| }; |
| |
| for (field = sc->args; field; |
| field = field->next, ++arg.idx, bit <<= 1) { |
| if (arg.mask & bit) |
| continue; |
| |
| /* special care for unaligned accesses */ |
| p = args + sizeof(unsigned long) * arg.idx; |
| memcpy(&val, p, sizeof(val)); |
| |
| /* |
| * Suppress this argument if its value is zero and |
| * and we don't have a string associated in an |
| * strarray for it. |
| */ |
| if (val == 0 && |
| !(sc->arg_scnprintf && |
| sc->arg_scnprintf[arg.idx] == SCA_STRARRAY && |
| sc->arg_parm[arg.idx])) |
| continue; |
| |
| printed += scnprintf(bf + printed, size - printed, |
| "%s%s: ", printed ? ", " : "", field->name); |
| if (sc->arg_scnprintf && sc->arg_scnprintf[arg.idx]) { |
| arg.val = val; |
| if (sc->arg_parm) |
| arg.parm = sc->arg_parm[arg.idx]; |
| printed += sc->arg_scnprintf[arg.idx](bf + printed, |
| size - printed, &arg); |
| } else { |
| printed += scnprintf(bf + printed, size - printed, |
| "%ld", val); |
| } |
| } |
| } else { |
| int i = 0; |
| |
| while (i < 6) { |
| /* special care for unaligned accesses */ |
| p = args + sizeof(unsigned long) * i; |
| memcpy(&val, p, sizeof(val)); |
| printed += scnprintf(bf + printed, size - printed, |
| "%sarg%d: %ld", |
| printed ? ", " : "", i, val); |
| ++i; |
| } |
| } |
| |
| return printed; |
| } |
| |
| typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel, |
| union perf_event *event, |
| struct perf_sample *sample); |
| |
| static struct syscall *trace__syscall_info(struct trace *trace, |
| struct perf_evsel *evsel, int id) |
| { |
| |
| if (id < 0) { |
| |
| /* |
| * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried |
| * before that, leaving at a higher verbosity level till that is |
| * explained. Reproduced with plain ftrace with: |
| * |
| * echo 1 > /t/events/raw_syscalls/sys_exit/enable |
| * grep "NR -1 " /t/trace_pipe |
| * |
| * After generating some load on the machine. |
| */ |
| if (verbose > 1) { |
| static u64 n; |
| fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n", |
| id, perf_evsel__name(evsel), ++n); |
| } |
| return NULL; |
| } |
| |
| if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) && |
| trace__read_syscall_info(trace, id)) |
| goto out_cant_read; |
| |
| if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL)) |
| goto out_cant_read; |
| |
| return &trace->syscalls.table[id]; |
| |
| out_cant_read: |
| if (verbose) { |
| fprintf(trace->output, "Problems reading syscall %d", id); |
| if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL) |
| fprintf(trace->output, "(%s)", trace->syscalls.table[id].name); |
| fputs(" information\n", trace->output); |
| } |
| return NULL; |
| } |
| |
| static void thread__update_stats(struct thread_trace *ttrace, |
| int id, struct perf_sample *sample) |
| { |
| struct int_node *inode; |
| struct stats *stats; |
| u64 duration = 0; |
| |
| inode = intlist__findnew(ttrace->syscall_stats, id); |
| if (inode == NULL) |
| return; |
| |
| stats = inode->priv; |
| if (stats == NULL) { |
| stats = malloc(sizeof(struct stats)); |
| if (stats == NULL) |
| return; |
| init_stats(stats); |
| inode->priv = stats; |
| } |
| |
| if (ttrace->entry_time && sample->time > ttrace->entry_time) |
| duration = sample->time - ttrace->entry_time; |
| |
| update_stats(stats, duration); |
| } |
| |
| static int trace__printf_interrupted_entry(struct trace *trace, struct perf_sample *sample) |
| { |
| struct thread_trace *ttrace; |
| u64 duration; |
| size_t printed; |
| |
| if (trace->current == NULL) |
| return 0; |
| |
| ttrace = thread__priv(trace->current); |
| |
| if (!ttrace->entry_pending) |
| return 0; |
| |
| duration = sample->time - ttrace->entry_time; |
| |
| printed = trace__fprintf_entry_head(trace, trace->current, duration, sample->time, trace->output); |
| printed += fprintf(trace->output, "%-70s) ...\n", ttrace->entry_str); |
| ttrace->entry_pending = false; |
| |
| return printed; |
| } |
| |
| static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel, |
| union perf_event *event __maybe_unused, |
| struct perf_sample *sample) |
| { |
| char *msg; |
| void *args; |
| size_t printed = 0; |
| struct thread *thread; |
| int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1; |
| struct syscall *sc = trace__syscall_info(trace, evsel, id); |
| struct thread_trace *ttrace; |
| |
| if (sc == NULL) |
| return -1; |
| |
| thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); |
| ttrace = thread__trace(thread, trace->output); |
| if (ttrace == NULL) |
| goto out_put; |
| |
| args = perf_evsel__sc_tp_ptr(evsel, args, sample); |
| |
| if (ttrace->entry_str == NULL) { |
| ttrace->entry_str = malloc(trace__entry_str_size); |
| if (!ttrace->entry_str) |
| goto out_put; |
| } |
| |
| if (!trace->summary_only) |
| trace__printf_interrupted_entry(trace, sample); |
| |
| ttrace->entry_time = sample->time; |
| msg = ttrace->entry_str; |
| printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name); |
| |
| printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed, |
| args, trace, thread); |
| |
| if (sc->is_exit) { |
| if (!trace->duration_filter && !trace->summary_only) { |
| trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output); |
| fprintf(trace->output, "%-70s\n", ttrace->entry_str); |
| } |
| } else { |
| ttrace->entry_pending = true; |
| /* See trace__vfs_getname & trace__sys_exit */ |
| ttrace->filename.pending_open = false; |
| } |
| |
| if (trace->current != thread) { |
| thread__put(trace->current); |
| trace->current = thread__get(thread); |
| } |
| err = 0; |
| out_put: |
| thread__put(thread); |
| return err; |
| } |
| |
| static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel, |
| union perf_event *event __maybe_unused, |
| struct perf_sample *sample) |
| { |
| long ret; |
| u64 duration = 0; |
| struct thread *thread; |
| int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1; |
| struct syscall *sc = trace__syscall_info(trace, evsel, id); |
| struct thread_trace *ttrace; |
| |
| if (sc == NULL) |
| return -1; |
| |
| thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); |
| ttrace = thread__trace(thread, trace->output); |
| if (ttrace == NULL) |
| goto out_put; |
| |
| if (trace->summary) |
| thread__update_stats(ttrace, id, sample); |
| |
| ret = perf_evsel__sc_tp_uint(evsel, ret, sample); |
| |
| if (id == trace->audit.open_id && ret >= 0 && ttrace->filename.pending_open) { |
| trace__set_fd_pathname(thread, ret, ttrace->filename.name); |
| ttrace->filename.pending_open = false; |
| ++trace->stats.vfs_getname; |
| } |
| |
| ttrace->exit_time = sample->time; |
| |
| if (ttrace->entry_time) { |
| duration = sample->time - ttrace->entry_time; |
| if (trace__filter_duration(trace, duration)) |
| goto out; |
| } else if (trace->duration_filter) |
| goto out; |
| |
| if (trace->summary_only) |
| goto out; |
| |
| trace__fprintf_entry_head(trace, thread, duration, sample->time, trace->output); |
| |
| if (ttrace->entry_pending) { |
| fprintf(trace->output, "%-70s", ttrace->entry_str); |
| } else { |
| fprintf(trace->output, " ... ["); |
| color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued"); |
| fprintf(trace->output, "]: %s()", sc->name); |
| } |
| |
| if (sc->fmt == NULL) { |
| signed_print: |
| fprintf(trace->output, ") = %ld", ret); |
| } else if (ret < 0 && sc->fmt->errmsg) { |
| char bf[STRERR_BUFSIZE]; |
| const char *emsg = strerror_r(-ret, bf, sizeof(bf)), |
| *e = audit_errno_to_name(-ret); |
| |
| fprintf(trace->output, ") = -1 %s %s", e, emsg); |
| } else if (ret == 0 && sc->fmt->timeout) |
| fprintf(trace->output, ") = 0 Timeout"); |
| else if (sc->fmt->hexret) |
| fprintf(trace->output, ") = %#lx", ret); |
| else |
| goto signed_print; |
| |
| fputc('\n', trace->output); |
| out: |
| ttrace->entry_pending = false; |
| err = 0; |
| out_put: |
| thread__put(thread); |
| return err; |
| } |
| |
| static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel, |
| union perf_event *event __maybe_unused, |
| struct perf_sample *sample) |
| { |
| struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); |
| struct thread_trace *ttrace; |
| size_t filename_len, entry_str_len, to_move; |
| ssize_t remaining_space; |
| char *pos; |
| const char *filename = perf_evsel__rawptr(evsel, sample, "pathname"); |
| |
| if (!thread) |
| goto out; |
| |
| ttrace = thread__priv(thread); |
| if (!ttrace) |
| goto out; |
| |
| filename_len = strlen(filename); |
| |
| if (ttrace->filename.namelen < filename_len) { |
| char *f = realloc(ttrace->filename.name, filename_len + 1); |
| |
| if (f == NULL) |
| goto out; |
| |
| ttrace->filename.namelen = filename_len; |
| ttrace->filename.name = f; |
| } |
| |
| strcpy(ttrace->filename.name, filename); |
| ttrace->filename.pending_open = true; |
| |
| if (!ttrace->filename.ptr) |
| goto out; |
| |
| entry_str_len = strlen(ttrace->entry_str); |
| remaining_space = trace__entry_str_size - entry_str_len - 1; /* \0 */ |
| if (remaining_space <= 0) |
| goto out; |
| |
| if (filename_len > (size_t)remaining_space) { |
| filename += filename_len - remaining_space; |
| filename_len = remaining_space; |
| } |
| |
| to_move = entry_str_len - ttrace->filename.entry_str_pos + 1; /* \0 */ |
| pos = ttrace->entry_str + ttrace->filename.entry_str_pos; |
| memmove(pos + filename_len, pos, to_move); |
| memcpy(pos, filename, filename_len); |
| |
| ttrace->filename.ptr = 0; |
| ttrace->filename.entry_str_pos = 0; |
| out: |
| return 0; |
| } |
| |
| static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel, |
| union perf_event *event __maybe_unused, |
| struct perf_sample *sample) |
| { |
| u64 runtime = perf_evsel__intval(evsel, sample, "runtime"); |
| double runtime_ms = (double)runtime / NSEC_PER_MSEC; |
| struct thread *thread = machine__findnew_thread(trace->host, |
| sample->pid, |
| sample->tid); |
| struct thread_trace *ttrace = thread__trace(thread, trace->output); |
| |
| if (ttrace == NULL) |
| goto out_dump; |
| |
| ttrace->runtime_ms += runtime_ms; |
| trace->runtime_ms += runtime_ms; |
| thread__put(thread); |
| return 0; |
| |
| out_dump: |
| fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n", |
| evsel->name, |
| perf_evsel__strval(evsel, sample, "comm"), |
| (pid_t)perf_evsel__intval(evsel, sample, "pid"), |
| runtime, |
| perf_evsel__intval(evsel, sample, "vruntime")); |
| thread__put(thread); |
| return 0; |
| } |
| |
| static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel, |
| union perf_event *event __maybe_unused, |
| struct perf_sample *sample) |
| { |
| trace__printf_interrupted_entry(trace, sample); |
| trace__fprintf_tstamp(trace, sample->time, trace->output); |
| |
| if (trace->trace_syscalls) |
| fprintf(trace->output, "( ): "); |
| |
| fprintf(trace->output, "%s:", evsel->name); |
| |
| if (evsel->tp_format) { |
| event_format__fprintf(evsel->tp_format, sample->cpu, |
| sample->raw_data, sample->raw_size, |
| trace->output); |
| } |
| |
| fprintf(trace->output, ")\n"); |
| return 0; |
| } |
| |
| static void print_location(FILE *f, struct perf_sample *sample, |
| struct addr_location *al, |
| bool print_dso, bool print_sym) |
| { |
| |
| if ((verbose || print_dso) && al->map) |
| fprintf(f, "%s@", al->map->dso->long_name); |
| |
| if ((verbose || print_sym) && al->sym) |
| fprintf(f, "%s+0x%" PRIx64, al->sym->name, |
| al->addr - al->sym->start); |
| else if (al->map) |
| fprintf(f, "0x%" PRIx64, al->addr); |
| else |
| fprintf(f, "0x%" PRIx64, sample->addr); |
| } |
| |
| static int trace__pgfault(struct trace *trace, |
| struct perf_evsel *evsel, |
| union perf_event *event, |
| struct perf_sample *sample) |
| { |
| struct thread *thread; |
| u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
| struct addr_location al; |
| char map_type = 'd'; |
| struct thread_trace *ttrace; |
| int err = -1; |
| |
| thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); |
| ttrace = thread__trace(thread, trace->output); |
| if (ttrace == NULL) |
| goto out_put; |
| |
| if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ) |
| ttrace->pfmaj++; |
| else |
| ttrace->pfmin++; |
| |
| if (trace->summary_only) |
| goto out; |
| |
| thread__find_addr_location(thread, cpumode, MAP__FUNCTION, |
| sample->ip, &al); |
| |
| trace__fprintf_entry_head(trace, thread, 0, sample->time, trace->output); |
| |
| fprintf(trace->output, "%sfault [", |
| evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ? |
| "maj" : "min"); |
| |
| print_location(trace->output, sample, &al, false, true); |
| |
| fprintf(trace->output, "] => "); |
| |
| thread__find_addr_location(thread, cpumode, MAP__VARIABLE, |
| sample->addr, &al); |
| |
| if (!al.map) { |
| thread__find_addr_location(thread, cpumode, |
| MAP__FUNCTION, sample->addr, &al); |
| |
| if (al.map) |
| map_type = 'x'; |
| else |
| map_type = '?'; |
| } |
| |
| print_location(trace->output, sample, &al, true, false); |
| |
| fprintf(trace->output, " (%c%c)\n", map_type, al.level); |
| out: |
| err = 0; |
| out_put: |
| thread__put(thread); |
| return err; |
| } |
| |
| static bool skip_sample(struct trace *trace, struct perf_sample *sample) |
| { |
| if ((trace->pid_list && intlist__find(trace->pid_list, sample->pid)) || |
| (trace->tid_list && intlist__find(trace->tid_list, sample->tid))) |
| return false; |
| |
| if (trace->pid_list || trace->tid_list) |
| return true; |
| |
| return false; |
| } |
| |
| static int trace__process_sample(struct perf_tool *tool, |
| union perf_event *event, |
| struct perf_sample *sample, |
| struct perf_evsel *evsel, |
| struct machine *machine __maybe_unused) |
| { |
| struct trace *trace = container_of(tool, struct trace, tool); |
| int err = 0; |
| |
| tracepoint_handler handler = evsel->handler; |
| |
| if (skip_sample(trace, sample)) |
| return 0; |
| |
| if (!trace->full_time && trace->base_time == 0) |
| trace->base_time = sample->time; |
| |
| if (handler) { |
| ++trace->nr_events; |
| handler(trace, evsel, event, sample); |
| } |
| |
| return err; |
| } |
| |
| static int parse_target_str(struct trace *trace) |
| { |
| if (trace->opts.target.pid) { |
| trace->pid_list = intlist__new(trace->opts.target.pid); |
| if (trace->pid_list == NULL) { |
| pr_err("Error parsing process id string\n"); |
| return -EINVAL; |
| } |
| } |
| |
| if (trace->opts.target.tid) { |
| trace->tid_list = intlist__new(trace->opts.target.tid); |
| if (trace->tid_list == NULL) { |
| pr_err("Error parsing thread id string\n"); |
| return -EINVAL; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int trace__record(struct trace *trace, int argc, const char **argv) |
| { |
| unsigned int rec_argc, i, j; |
| const char **rec_argv; |
| const char * const record_args[] = { |
| "record", |
| "-R", |
| "-m", "1024", |
| "-c", "1", |
| }; |
| |
| const char * const sc_args[] = { "-e", }; |
| unsigned int sc_args_nr = ARRAY_SIZE(sc_args); |
| const char * const majpf_args[] = { "-e", "major-faults" }; |
| unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args); |
| const char * const minpf_args[] = { "-e", "minor-faults" }; |
| unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args); |
| |
| /* +1 is for the event string below */ |
| rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 + |
| majpf_args_nr + minpf_args_nr + argc; |
| rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
| |
| if (rec_argv == NULL) |
| return -ENOMEM; |
| |
| j = 0; |
| for (i = 0; i < ARRAY_SIZE(record_args); i++) |
| rec_argv[j++] = record_args[i]; |
| |
| if (trace->trace_syscalls) { |
| for (i = 0; i < sc_args_nr; i++) |
| rec_argv[j++] = sc_args[i]; |
| |
| /* event string may be different for older kernels - e.g., RHEL6 */ |
| if (is_valid_tracepoint("raw_syscalls:sys_enter")) |
| rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit"; |
| else if (is_valid_tracepoint("syscalls:sys_enter")) |
| rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit"; |
| else { |
| pr_err("Neither raw_syscalls nor syscalls events exist.\n"); |
| return -1; |
| } |
| } |
| |
| if (trace->trace_pgfaults & TRACE_PFMAJ) |
| for (i = 0; i < majpf_args_nr; i++) |
| rec_argv[j++] = majpf_args[i]; |
| |
| if (trace->trace_pgfaults & TRACE_PFMIN) |
| for (i = 0; i < minpf_args_nr; i++) |
| rec_argv[j++] = minpf_args[i]; |
| |
| for (i = 0; i < (unsigned int)argc; i++) |
| rec_argv[j++] = argv[i]; |
| |
| return cmd_record(j, rec_argv, NULL); |
| } |
| |
| static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp); |
| |
| static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist) |
| { |
| struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname"); |
| |
| if (IS_ERR(evsel)) |
| return false; |
| |
| if (perf_evsel__field(evsel, "pathname") == NULL) { |
| perf_evsel__delete(evsel); |
| return false; |
| } |
| |
| evsel->handler = trace__vfs_getname; |
| perf_evlist__add(evlist, evsel); |
| return true; |
| } |
| |
| static int perf_evlist__add_pgfault(struct perf_evlist *evlist, |
| u64 config) |
| { |
| struct perf_evsel *evsel; |
| struct perf_event_attr attr = { |
| .type = PERF_TYPE_SOFTWARE, |
| .mmap_data = 1, |
| }; |
| |
| attr.config = config; |
| attr.sample_period = 1; |
| |
| event_attr_init(&attr); |
| |
| evsel = perf_evsel__new(&attr); |
| if (!evsel) |
| return -ENOMEM; |
| |
| evsel->handler = trace__pgfault; |
| perf_evlist__add(evlist, evsel); |
| |
| return 0; |
| } |
| |
| static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample) |
| { |
| const u32 type = event->header.type; |
| struct perf_evsel *evsel; |
| |
| if (!trace->full_time && trace->base_time == 0) |
| trace->base_time = sample->time; |
| |
| if (type != PERF_RECORD_SAMPLE) { |
| trace__process_event(trace, trace->host, event, sample); |
| return; |
| } |
| |
| evsel = perf_evlist__id2evsel(trace->evlist, sample->id); |
| if (evsel == NULL) { |
| fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id); |
| return; |
| } |
| |
| if (evsel->attr.type == PERF_TYPE_TRACEPOINT && |
| sample->raw_data == NULL) { |
| fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n", |
| perf_evsel__name(evsel), sample->tid, |
| sample->cpu, sample->raw_size); |
| } else { |
| tracepoint_handler handler = evsel->handler; |
| handler(trace, evsel, event, sample); |
| } |
| } |
| |
| static int trace__add_syscall_newtp(struct trace *trace) |
| { |
| int ret = -1; |
| struct perf_evlist *evlist = trace->evlist; |
| struct perf_evsel *sys_enter, *sys_exit; |
| |
| sys_enter = perf_evsel__syscall_newtp("sys_enter", trace__sys_enter); |
| if (sys_enter == NULL) |
| goto out; |
| |
| if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args)) |
| goto out_delete_sys_enter; |
| |
| sys_exit = perf_evsel__syscall_newtp("sys_exit", trace__sys_exit); |
| if (sys_exit == NULL) |
| goto out_delete_sys_enter; |
| |
| if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret)) |
| goto out_delete_sys_exit; |
| |
| perf_evlist__add(evlist, sys_enter); |
| perf_evlist__add(evlist, sys_exit); |
| |
| trace->syscalls.events.sys_enter = sys_enter; |
| trace->syscalls.events.sys_exit = sys_exit; |
| |
| ret = 0; |
| out: |
| return ret; |
| |
| out_delete_sys_exit: |
| perf_evsel__delete_priv(sys_exit); |
| out_delete_sys_enter: |
| perf_evsel__delete_priv(sys_enter); |
| goto out; |
| } |
| |
| static int trace__set_ev_qualifier_filter(struct trace *trace) |
| { |
| int err = -1; |
| char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier, |
| trace->ev_qualifier_ids.nr, |
| trace->ev_qualifier_ids.entries); |
| |
| if (filter == NULL) |
| goto out_enomem; |
| |
| if (!perf_evsel__append_filter(trace->syscalls.events.sys_enter, "&&", filter)) |
| err = perf_evsel__append_filter(trace->syscalls.events.sys_exit, "&&", filter); |
| |
| free(filter); |
| out: |
| return err; |
| out_enomem: |
| errno = ENOMEM; |
| goto out; |
| } |
| |
| static int trace__run(struct trace *trace, int argc, const char **argv) |
| { |
| struct perf_evlist *evlist = trace->evlist; |
| struct perf_evsel *evsel; |
| int err = -1, i; |
| unsigned long before; |
| const bool forks = argc > 0; |
| bool draining = false; |
| |
| trace->live = true; |
| |
| if (trace->trace_syscalls && trace__add_syscall_newtp(trace)) |
| goto out_error_raw_syscalls; |
| |
| if (trace->trace_syscalls) |
| trace->vfs_getname = perf_evlist__add_vfs_getname(evlist); |
| |
| if ((trace->trace_pgfaults & TRACE_PFMAJ) && |
| perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ)) { |
| goto out_error_mem; |
| } |
| |
| if ((trace->trace_pgfaults & TRACE_PFMIN) && |
| perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MIN)) |
| goto out_error_mem; |
| |
| if (trace->sched && |
| perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime", |
| trace__sched_stat_runtime)) |
| goto out_error_sched_stat_runtime; |
| |
| err = perf_evlist__create_maps(evlist, &trace->opts.target); |
| if (err < 0) { |
| fprintf(trace->output, "Problems parsing the target to trace, check your options!\n"); |
| goto out_delete_evlist; |
| } |
| |
| err = trace__symbols_init(trace, evlist); |
| if (err < 0) { |
| fprintf(trace->output, "Problems initializing symbol libraries!\n"); |
| goto out_delete_evlist; |
| } |
| |
| perf_evlist__config(evlist, &trace->opts); |
| |
| signal(SIGCHLD, sig_handler); |
| signal(SIGINT, sig_handler); |
| |
| if (forks) { |
| err = perf_evlist__prepare_workload(evlist, &trace->opts.target, |
| argv, false, NULL); |
| if (err < 0) { |
| fprintf(trace->output, "Couldn't run the workload!\n"); |
| goto out_delete_evlist; |
| } |
| } |
| |
| err = perf_evlist__open(evlist); |
| if (err < 0) |
| goto out_error_open; |
| |
| /* |
| * Better not use !target__has_task() here because we need to cover the |
| * case where no threads were specified in the command line, but a |
| * workload was, and in that case we will fill in the thread_map when |
| * we fork the workload in perf_evlist__prepare_workload. |
| */ |
| if (trace->filter_pids.nr > 0) |
| err = perf_evlist__set_filter_pids(evlist, trace->filter_pids.nr, trace->filter_pids.entries); |
| else if (thread_map__pid(evlist->threads, 0) == -1) |
| err = perf_evlist__set_filter_pid(evlist, getpid()); |
| |
| if (err < 0) |
| goto out_error_mem; |
| |
| if (trace->ev_qualifier_ids.nr > 0) { |
| err = trace__set_ev_qualifier_filter(trace); |
| if (err < 0) |
| goto out_errno; |
| |
| pr_debug("event qualifier tracepoint filter: %s\n", |
| trace->syscalls.events.sys_exit->filter); |
| } |
| |
| err = perf_evlist__apply_filters(evlist, &evsel); |
| if (err < 0) |
| goto out_error_apply_filters; |
| |
| err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false); |
| if (err < 0) |
| goto out_error_mmap; |
| |
| if (!target__none(&trace->opts.target)) |
| perf_evlist__enable(evlist); |
| |
| if (forks) |
| perf_evlist__start_workload(evlist); |
| |
| trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 || |
| evlist->threads->nr > 1 || |
| perf_evlist__first(evlist)->attr.inherit; |
| again: |
| before = trace->nr_events; |
| |
| for (i = 0; i < evlist->nr_mmaps; i++) { |
| union perf_event *event; |
| |
| while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { |
| struct perf_sample sample; |
| |
| ++trace->nr_events; |
| |
| err = perf_evlist__parse_sample(evlist, event, &sample); |
| if (err) { |
| fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err); |
| goto next_event; |
| } |
| |
| trace__handle_event(trace, event, &sample); |
| next_event: |
| perf_evlist__mmap_consume(evlist, i); |
| |
| if (interrupted) |
| goto out_disable; |
| |
| if (done && !draining) { |
| perf_evlist__disable(evlist); |
| draining = true; |
| } |
| } |
| } |
| |
| if (trace->nr_events == before) { |
| int timeout = done ? 100 : -1; |
| |
| if (!draining && perf_evlist__poll(evlist, timeout) > 0) { |
| if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) == 0) |
| draining = true; |
| |
| goto again; |
| } |
| } else { |
| goto again; |
| } |
| |
| out_disable: |
| thread__zput(trace->current); |
| |
| perf_evlist__disable(evlist); |
| |
| if (!err) { |
| if (trace->summary) |
| trace__fprintf_thread_summary(trace, trace->output); |
| |
| if (trace->show_tool_stats) { |
| fprintf(trace->output, "Stats:\n " |
| " vfs_getname : %" PRIu64 "\n" |
| " proc_getname: %" PRIu64 "\n", |
| trace->stats.vfs_getname, |
| trace->stats.proc_getname); |
| } |
| } |
| |
| out_delete_evlist: |
| perf_evlist__delete(evlist); |
| trace->evlist = NULL; |
|