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Unix SMB/CIFS implementation.
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store smbd profiling information in shared memory
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Copyright (C) Andrew Tridgell 1999
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Copyright (C) James Peach 2006
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#define IPC_PERMS ((S_IRUSR | S_IWUSR) | S_IRGRP | S_IROTH)
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#endif /* WITH_PROFILE */
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static BOOL read_only;
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#if defined(HAVE_CLOCK_GETTIME)
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clockid_t __profile_clock;
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BOOL have_profiling_clock = False;
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struct profile_header *profile_h;
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struct profile_stats *profile_p;
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BOOL do_profile_flag = False;
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BOOL do_profile_times = False;
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/****************************************************************************
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receive a set profile level message
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****************************************************************************/
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void profile_message(int msg_type, struct process_id src, void *buf, size_t len)
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memcpy(&level, buf, sizeof(int));
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case 0: /* turn off profiling */
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do_profile_flag = False;
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do_profile_times = False;
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DEBUG(1,("INFO: Profiling turned OFF from pid %d\n",
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(int)procid_to_pid(&src)));
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case 1: /* turn on counter profiling only */
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do_profile_flag = True;
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do_profile_times = False;
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DEBUG(1,("INFO: Profiling counts turned ON from pid %d\n",
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(int)procid_to_pid(&src)));
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case 2: /* turn on complete profiling */
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#if defined(HAVE_CLOCK_GETTIME)
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if (!have_profiling_clock) {
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do_profile_flag = True;
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do_profile_times = False;
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DEBUG(1,("INFO: Profiling counts turned ON from "
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"pid %d\n", (int)procid_to_pid(&src)));
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DEBUGADD(1,("INFO: Profiling times disabled "
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"due to lack of a suitable clock\n"));
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do_profile_flag = True;
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do_profile_times = True;
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DEBUG(1,("INFO: Full profiling turned ON from pid %d\n",
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(int)procid_to_pid(&src)));
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case 3: /* reset profile values */
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memset((char *)profile_p, 0, sizeof(*profile_p));
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DEBUG(1,("INFO: Profiling values cleared from pid %d\n",
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(int)procid_to_pid(&src)));
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#else /* WITH_PROFILE */
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DEBUG(1,("INFO: Profiling support unavailable in this build.\n"));
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#endif /* WITH_PROFILE */
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/****************************************************************************
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receive a request profile level message
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****************************************************************************/
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void reqprofile_message(int msg_type, struct process_id src,
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void *buf, size_t len)
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level = 1 + (do_profile_flag?2:0) + (do_profile_times?4:0);
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DEBUG(1,("INFO: Received REQ_PROFILELEVEL message from PID %u\n",
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(unsigned int)procid_to_pid(&src)));
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message_send_pid(src, MSG_PROFILELEVEL, &level, sizeof(int), True);
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/*******************************************************************
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open the profiling shared memory area
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******************************************************************/
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#ifdef HAVE_CLOCK_GETTIME
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/* Find a clock. Just because the definition for a particular clock ID is
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* present doesn't mean the system actually supports it.
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static void init_clock_gettime(void)
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have_profiling_clock = False;
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#ifdef HAVE_CLOCK_PROCESS_CPUTIME_ID
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/* CLOCK_PROCESS_CPUTIME_ID is sufficiently fast that the
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* always profiling times is plausible. Unfortunately on Linux
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* it is only accurate if we can guarantee we will not be scheduled
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* scheduled onto a different CPU between samples. Until there is
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* some way to set processor affinity, we can only use this on
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if (!this_is_smp()) {
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if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == 0) {
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DEBUG(10, ("Using CLOCK_PROCESS_CPUTIME_ID "
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"for profile_clock\n"));
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__profile_clock = CLOCK_PROCESS_CPUTIME_ID;
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have_profiling_clock = True;
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#ifdef HAVE_CLOCK_MONOTONIC
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if (!have_profiling_clock &&
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clock_gettime(CLOCK_MONOTONIC, &ts) == 0) {
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DEBUG(10, ("Using CLOCK_MONOTONIC for profile_clock\n"));
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__profile_clock = CLOCK_MONOTONIC;
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have_profiling_clock = True;
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#ifdef HAVE_CLOCK_REALTIME
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/* POSIX says that CLOCK_REALTIME should be defined everywhere
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* where we have clock_gettime...
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if (!have_profiling_clock &&
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clock_gettime(CLOCK_REALTIME, &ts) == 0) {
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__profile_clock = CLOCK_REALTIME;
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have_profiling_clock = True;
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SMB_WARN(__profile_clock != CLOCK_REALTIME,
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("forced to use a slow profiling clock"));
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SMB_WARN(have_profiling_clock == True,
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("could not find a working clock for profiling"));
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BOOL profile_setup(BOOL rdonly)
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struct shmid_ds shm_ds;
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#ifdef HAVE_CLOCK_GETTIME
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init_clock_gettime();
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/* try to use an existing key */
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shm_id = shmget(PROF_SHMEM_KEY, 0, 0);
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/* if that failed then create one. There is a race condition here
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if we are running from inetd. Bad luck. */
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if (read_only) return False;
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shm_id = shmget(PROF_SHMEM_KEY, sizeof(*profile_h),
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IPC_CREAT | IPC_EXCL | IPC_PERMS);
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DEBUG(0,("Can't create or use IPC area. Error was %s\n",
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profile_h = (struct profile_header *)shmat(shm_id, 0,
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read_only?SHM_RDONLY:0);
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if ((long)profile_p == -1) {
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DEBUG(0,("Can't attach to IPC area. Error was %s\n",
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/* find out who created this memory area */
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if (shmctl(shm_id, IPC_STAT, &shm_ds) != 0) {
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DEBUG(0,("ERROR shmctl : can't IPC_STAT. Error was %s\n",
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if (shm_ds.shm_perm.cuid != sec_initial_uid() ||
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shm_ds.shm_perm.cgid != sec_initial_gid()) {
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DEBUG(0,("ERROR: we did not create the shmem "
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"(owned by another user, uid %u, gid %u)\n",
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shm_ds.shm_perm.cuid,
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shm_ds.shm_perm.cgid));
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if (shm_ds.shm_segsz != sizeof(*profile_h)) {
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DEBUG(0,("WARNING: profile size is %d (expected %d). Deleting\n",
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(int)shm_ds.shm_segsz, sizeof(*profile_h)));
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if (shmctl(shm_id, IPC_RMID, &shm_ds) == 0) {
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if (!read_only && (shm_ds.shm_nattch == 1)) {
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memset((char *)profile_h, 0, sizeof(*profile_h));
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profile_h->prof_shm_magic = PROF_SHM_MAGIC;
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profile_h->prof_shm_version = PROF_SHM_VERSION;
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DEBUG(3,("Initialised profile area\n"));
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profile_p = &profile_h->stats;
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message_register(MSG_PROFILE, profile_message);
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message_register(MSG_REQ_PROFILELEVEL, reqprofile_message);
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const char * profile_value_name(enum profile_stats_values val)
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static const char * valnames[PR_VALUE_MAX + 1] =
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"smbd_idle", /* PR_VALUE_SMBD_IDLE */
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"syscall_opendir", /* PR_VALUE_SYSCALL_OPENDIR */
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"syscall_readdir", /* PR_VALUE_SYSCALL_READDIR */
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"syscall_seekdir", /* PR_VALUE_SYSCALL_SEEKDIR */
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"syscall_telldir", /* PR_VALUE_SYSCALL_TELLDIR */
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"syscall_rewinddir", /* PR_VALUE_SYSCALL_REWINDDIR */
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"syscall_mkdir", /* PR_VALUE_SYSCALL_MKDIR */
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"syscall_rmdir", /* PR_VALUE_SYSCALL_RMDIR */
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"syscall_closedir", /* PR_VALUE_SYSCALL_CLOSEDIR */
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"syscall_open", /* PR_VALUE_SYSCALL_OPEN */
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"syscall_close", /* PR_VALUE_SYSCALL_CLOSE */
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"syscall_read", /* PR_VALUE_SYSCALL_READ */
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"syscall_pread", /* PR_VALUE_SYSCALL_PREAD */
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"syscall_write", /* PR_VALUE_SYSCALL_WRITE */
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"syscall_pwrite", /* PR_VALUE_SYSCALL_PWRITE */
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"syscall_lseek", /* PR_VALUE_SYSCALL_LSEEK */
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"syscall_sendfile", /* PR_VALUE_SYSCALL_SENDFILE */
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"syscall_rename", /* PR_VALUE_SYSCALL_RENAME */
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"syscall_fsync", /* PR_VALUE_SYSCALL_FSYNC */
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"syscall_stat", /* PR_VALUE_SYSCALL_STAT */
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"syscall_fstat", /* PR_VALUE_SYSCALL_FSTAT */
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"syscall_lstat", /* PR_VALUE_SYSCALL_LSTAT */
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"syscall_unlink", /* PR_VALUE_SYSCALL_UNLINK */
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"syscall_chmod", /* PR_VALUE_SYSCALL_CHMOD */
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"syscall_fchmod", /* PR_VALUE_SYSCALL_FCHMOD */
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"syscall_chown", /* PR_VALUE_SYSCALL_CHOWN */
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"syscall_fchown", /* PR_VALUE_SYSCALL_FCHOWN */
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"syscall_chdir", /* PR_VALUE_SYSCALL_CHDIR */
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"syscall_getwd", /* PR_VALUE_SYSCALL_GETWD */
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"syscall_utime", /* PR_VALUE_SYSCALL_UTIME */
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"syscall_ftruncate", /* PR_VALUE_SYSCALL_FTRUNCATE */
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"syscall_fcntl_lock", /* PR_VALUE_SYSCALL_FCNTL_LOCK */
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"syscall_fcntl_getlock", /* PR_VALUE_SYSCALL_FCNTL_GETLOCK */
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"syscall_readlink", /* PR_VALUE_SYSCALL_READLINK */
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"syscall_symlink", /* PR_VALUE_SYSCALL_SYMLINK */
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"syscall_link", /* PR_VALUE_SYSCALL_LINK */
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"syscall_mknod", /* PR_VALUE_SYSCALL_MKNOD */
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"syscall_realpath", /* PR_VALUE_SYSCALL_REALPATH */
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"syscall_get_quota", /* PR_VALUE_SYSCALL_GET_QUOTA */
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"syscall_set_quota", /* PR_VALUE_SYSCALL_SET_QUOTA */
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"SMBmkdir", /* PR_VALUE_SMBMKDIR */
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"SMBrmdir", /* PR_VALUE_SMBRMDIR */
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"SMBopen", /* PR_VALUE_SMBOPEN */
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"SMBcreate", /* PR_VALUE_SMBCREATE */
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"SMBclose", /* PR_VALUE_SMBCLOSE */
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"SMBflush", /* PR_VALUE_SMBFLUSH */
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"SMBunlink", /* PR_VALUE_SMBUNLINK */
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"SMBmv", /* PR_VALUE_SMBMV */
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"SMBgetatr", /* PR_VALUE_SMBGETATR */
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"SMBsetatr", /* PR_VALUE_SMBSETATR */
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"SMBread", /* PR_VALUE_SMBREAD */
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"SMBwrite", /* PR_VALUE_SMBWRITE */
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"SMBlock", /* PR_VALUE_SMBLOCK */
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"SMBunlock", /* PR_VALUE_SMBUNLOCK */
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"SMBctemp", /* PR_VALUE_SMBCTEMP */
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"SMBmknew", /* PR_VALUE_SMBMKNEW */
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"SMBchkpth", /* PR_VALUE_SMBCHKPTH */
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"SMBexit", /* PR_VALUE_SMBEXIT */
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"SMBlseek", /* PR_VALUE_SMBLSEEK */
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"SMBlockread", /* PR_VALUE_SMBLOCKREAD */
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"SMBwriteunlock", /* PR_VALUE_SMBWRITEUNLOCK */
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"SMBreadbraw", /* PR_VALUE_SMBREADBRAW */
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"SMBreadBmpx", /* PR_VALUE_SMBREADBMPX */
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"SMBreadBs", /* PR_VALUE_SMBREADBS */
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"SMBwritebraw", /* PR_VALUE_SMBWRITEBRAW */
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"SMBwriteBmpx", /* PR_VALUE_SMBWRITEBMPX */
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"SMBwriteBs", /* PR_VALUE_SMBWRITEBS */
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"SMBwritec", /* PR_VALUE_SMBWRITEC */
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"SMBsetattrE", /* PR_VALUE_SMBSETATTRE */
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"SMBgetattrE", /* PR_VALUE_SMBGETATTRE */
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"SMBlockingX", /* PR_VALUE_SMBLOCKINGX */
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"SMBtrans", /* PR_VALUE_SMBTRANS */
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"SMBtranss", /* PR_VALUE_SMBTRANSS */
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"SMBioctl", /* PR_VALUE_SMBIOCTL */
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"SMBioctls", /* PR_VALUE_SMBIOCTLS */
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"SMBcopy", /* PR_VALUE_SMBCOPY */
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"SMBmove", /* PR_VALUE_SMBMOVE */
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"SMBecho", /* PR_VALUE_SMBECHO */
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"SMBwriteclose", /* PR_VALUE_SMBWRITECLOSE */
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"SMBopenX", /* PR_VALUE_SMBOPENX */
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"SMBreadX", /* PR_VALUE_SMBREADX */
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"SMBwriteX", /* PR_VALUE_SMBWRITEX */
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"SMBtrans2", /* PR_VALUE_SMBTRANS2 */
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"SMBtranss2", /* PR_VALUE_SMBTRANSS2 */
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"SMBfindclose", /* PR_VALUE_SMBFINDCLOSE */
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"SMBfindnclose", /* PR_VALUE_SMBFINDNCLOSE */
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"SMBtcon", /* PR_VALUE_SMBTCON */
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"SMBtdis", /* PR_VALUE_SMBTDIS */
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"SMBnegprot", /* PR_VALUE_SMBNEGPROT */
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"SMBsesssetupX", /* PR_VALUE_SMBSESSSETUPX */
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"SMBulogoffX", /* PR_VALUE_SMBULOGOFFX */
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"SMBtconX", /* PR_VALUE_SMBTCONX */
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"SMBdskattr", /* PR_VALUE_SMBDSKATTR */
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"SMBsearch", /* PR_VALUE_SMBSEARCH */
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"SMBffirst", /* PR_VALUE_SMBFFIRST */
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"SMBfunique", /* PR_VALUE_SMBFUNIQUE */
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"SMBfclose", /* PR_VALUE_SMBFCLOSE */
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"SMBnttrans", /* PR_VALUE_SMBNTTRANS */
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"SMBnttranss", /* PR_VALUE_SMBNTTRANSS */
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"SMBntcreateX", /* PR_VALUE_SMBNTCREATEX */
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"SMBntcancel", /* PR_VALUE_SMBNTCANCEL */
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"SMBntrename", /* PR_VALUE_SMBNTRENAME */
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"SMBsplopen", /* PR_VALUE_SMBSPLOPEN */
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"SMBsplwr", /* PR_VALUE_SMBSPLWR */
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"SMBsplclose", /* PR_VALUE_SMBSPLCLOSE */
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"SMBsplretq", /* PR_VALUE_SMBSPLRETQ */
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"SMBsends", /* PR_VALUE_SMBSENDS */
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"SMBsendb", /* PR_VALUE_SMBSENDB */
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"SMBfwdname", /* PR_VALUE_SMBFWDNAME */
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"SMBcancelf", /* PR_VALUE_SMBCANCELF */
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"SMBgetmac", /* PR_VALUE_SMBGETMAC */
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"SMBsendstrt", /* PR_VALUE_SMBSENDSTRT */
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"SMBsendend", /* PR_VALUE_SMBSENDEND */
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"SMBsendtxt", /* PR_VALUE_SMBSENDTXT */
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"SMBinvalid", /* PR_VALUE_SMBINVALID */
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"pathworks_setdir", /* PR_VALUE_PATHWORKS_SETDIR */
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"Trans2_open", /* PR_VALUE_TRANS2_OPEN */
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"Trans2_findfirst", /* PR_VALUE_TRANS2_FINDFIRST */
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"Trans2_findnext", /* PR_VALUE_TRANS2_FINDNEXT */
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"Trans2_qfsinfo", /* PR_VALUE_TRANS2_QFSINFO */
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"Trans2_setfsinfo", /* PR_VALUE_TRANS2_SETFSINFO */
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"Trans2_qpathinfo", /* PR_VALUE_TRANS2_QPATHINFO */
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"Trans2_setpathinfo", /* PR_VALUE_TRANS2_SETPATHINFO */
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"Trans2_qfileinfo", /* PR_VALUE_TRANS2_QFILEINFO */
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"Trans2_setfileinfo", /* PR_VALUE_TRANS2_SETFILEINFO */
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"Trans2_fsctl", /* PR_VALUE_TRANS2_FSCTL */
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"Trans2_ioctl", /* PR_VALUE_TRANS2_IOCTL */
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"Trans2_findnotifyfirst", /* PR_VALUE_TRANS2_FINDNOTIFYFIRST */
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"Trans2_findnotifynext", /* PR_VALUE_TRANS2_FINDNOTIFYNEXT */
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"Trans2_mkdir", /* PR_VALUE_TRANS2_MKDIR */
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"Trans2_session_setup", /* PR_VALUE_TRANS2_SESSION_SETUP */
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"Trans2_get_dfs_referral", /* PR_VALUE_TRANS2_GET_DFS_REFERRAL */
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"Trans2_report_dfs_inconsistancy", /* PR_VALUE_TRANS2_REPORT_DFS_INCONSISTANCY */
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"NT_transact_create", /* PR_VALUE_NT_TRANSACT_CREATE */
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"NT_transact_ioctl", /* PR_VALUE_NT_TRANSACT_IOCTL */
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"NT_transact_set_security_desc", /* PR_VALUE_NT_TRANSACT_SET_SECURITY_DESC */
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"NT_transact_notify_change",/* PR_VALUE_NT_TRANSACT_NOTIFY_CHANGE */
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"NT_transact_rename", /* PR_VALUE_NT_TRANSACT_RENAME */
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"NT_transact_query_security_desc", /* PR_VALUE_NT_TRANSACT_QUERY_SECURITY_DESC */
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"NT_transact_get_user_quota",/* PR_VALUE_NT_TRANSACT_GET_USER_QUOTA */
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"NT_transact_set_user_quota",/* PR_VALUE_NT_TRANSACT_SET_USER_QUOTA */
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"get_nt_acl", /* PR_VALUE_GET_NT_ACL */
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"fget_nt_acl", /* PR_VALUE_FGET_NT_ACL */
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"set_nt_acl", /* PR_VALUE_SET_NT_ACL */
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"fset_nt_acl", /* PR_VALUE_FSET_NT_ACL */
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"chmod_acl", /* PR_VALUE_CHMOD_ACL */
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"fchmod_acl", /* PR_VALUE_FCHMOD_ACL */
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"name_release", /* PR_VALUE_NAME_RELEASE */
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"name_refresh", /* PR_VALUE_NAME_REFRESH */
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"name_registration", /* PR_VALUE_NAME_REGISTRATION */
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"node_status", /* PR_VALUE_NODE_STATUS */
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"name_query", /* PR_VALUE_NAME_QUERY */
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"host_announce", /* PR_VALUE_HOST_ANNOUNCE */
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"workgroup_announce", /* PR_VALUE_WORKGROUP_ANNOUNCE */
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"local_master_announce", /* PR_VALUE_LOCAL_MASTER_ANNOUNCE */
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"master_browser_announce", /* PR_VALUE_MASTER_BROWSER_ANNOUNCE */
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"lm_host_announce", /* PR_VALUE_LM_HOST_ANNOUNCE */
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"get_backup_list", /* PR_VALUE_GET_BACKUP_LIST */
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"reset_browser", /* PR_VALUE_RESET_BROWSER */
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"announce_request", /* PR_VALUE_ANNOUNCE_REQUEST */
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"lm_announce_request", /* PR_VALUE_LM_ANNOUNCE_REQUEST */
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"domain_logon", /* PR_VALUE_DOMAIN_LOGON */
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"sync_browse_lists", /* PR_VALUE_SYNC_BROWSE_LISTS */
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"run_elections", /* PR_VALUE_RUN_ELECTIONS */
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"election", /* PR_VALUE_ELECTION */
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"" /* PR_VALUE_MAX */
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SMB_ASSERT(val >= 0);
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SMB_ASSERT(val < PR_VALUE_MAX);
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return valnames[val];
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#endif /* WITH_PROFILE */
added
removed
source/profile/profile.c
