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samba-mirror/source3/profile/profile.c
Jim McDonough 4fe70bcee2 r19647: Add some GPFS support in a vfs mod. Also adds the kernel flock op to
the vfs layer, since gpfs supports it.  Thanks to Volker, Christian,
Mathias, Chetan, and Peter.
(This used to be commit 0620658890)
2007-10-10 12:15:43 -05:00

433 lines
16 KiB
C

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