From 4c4d72ee172a40a757e4a720f740e9ae9b7d9d91 Mon Sep 17 00:00:00 2001 From: Andrew Tridgell Date: Thu, 1 Apr 1999 05:35:22 +0000 Subject: [PATCH] new files needed by profiling code (This used to be commit cae71af4536ff8bd15080f22f9a559f72ff44c68) --- source3/include/profile.h | 32 +++++++++++ source3/profile/profile.c | 113 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 145 insertions(+) create mode 100644 source3/include/profile.h create mode 100644 source3/profile/profile.c diff --git a/source3/include/profile.h b/source3/include/profile.h new file mode 100644 index 00000000000..353f6a6b429 --- /dev/null +++ b/source3/include/profile.h @@ -0,0 +1,32 @@ +/* + Unix SMB/Netbios implementation. + Version 1.9. + store smbd profiling information in shared memory + Copyright (C) Andrew Tridgell 1999 + + 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. + +*/ + +/* this file defines the profile structure in the profile shared + memory area */ + +struct profile_struct { + unsigned smb_count; /* how many SMB packets we have processed */ + unsigned uid_changes; /* how many times we change our effective uid */ +}; + + +extern struct profile_struct *profile_p; diff --git a/source3/profile/profile.c b/source3/profile/profile.c new file mode 100644 index 00000000000..b685b119169 --- /dev/null +++ b/source3/profile/profile.c @@ -0,0 +1,113 @@ +/* + Unix SMB/Netbios implementation. + Version 1.9. + store smbd profiling information in shared memory + Copyright (C) Andrew Tridgell 1999 + + 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 + +#ifndef HAVE_SYSV_IPC +#error "You must have SYSV shared memory to compile in the profiling code" +#endif + +extern int DEBUGLEVEL; + +#define SHMEM_KEY ((key_t)0x07021999) +#define SHM_MAGIC 0x6349985 +#define SHM_VERSION 1 + +#define IPC_PERMS ((SHM_R | SHM_W) | (SHM_R>>3) | (SHM_R>>6)) + +static int shm_id; +static BOOL read_only; + +struct profile_struct *profile_p; + +/******************************************************************* + open the profiling shared memory area + ******************************************************************/ +BOOL profile_setup(BOOL rdonly) +{ + struct shmid_ds shm_ds; + + read_only = rdonly; + + again: + /* try to use an existing key */ + shm_id = shmget(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(SHMEM_KEY, sizeof(*profile_p), + 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_p = (struct profile_struct *)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 != 0 || shm_ds.shm_perm.cgid != 0) { + DEBUG(0,("ERROR: root did not create the shmem\n")); + return False; + } + + if (shm_ds.shm_segsz != sizeof(*profile_p)) { + DEBUG(0,("WARNING: profile size is %d (expected %d). Deleting\n", + (int)shm_ds.shm_segsz, sizeof(*profile_p))); + 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_p, 0, sizeof(*profile_p)); + DEBUG(3,("Initialised profile area\n")); + } + + return True; +} + +#else + /* to keep compilers happy about empty modules */ + void profile_dummy(void) {} +#endif -- 2.34.1