/*
- Bacula® - The Network Backup Solution
-
- Copyright (C) 2002-2008 Free Software Foundation Europe e.V.
-
- The main author of Bacula is Kern Sibbald, with contributions from
- many others, a complete list can be found in the file AUTHORS.
- This program is Free Software; you can redistribute it and/or
- modify it under the terms of version two of the GNU General Public
- License as published by the Free Software Foundation and included
- in the file LICENSE.
-
- 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., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA.
-
- Bacula® is a registered trademark of John Walker.
- The licensor of Bacula is the Free Software Foundation Europe
- (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
- Switzerland, email:ftf@fsfeurope.org.
+ Bacula(R) - The Network Backup Solution
+
+ Copyright (C) 2000-2017 Kern Sibbald
+
+ The original author of Bacula is Kern Sibbald, with contributions
+ from many others, a complete list can be found in the file AUTHORS.
+
+ You may use this file and others of this release according to the
+ license defined in the LICENSE file, which includes the Affero General
+ Public License, v3.0 ("AGPLv3") and some additional permissions and
+ terms pursuant to its AGPLv3 Section 7.
+
+ This notice must be preserved when any source code is
+ conveyed and/or propagated.
+
+ Bacula(R) is a registered trademark of Kern Sibbald.
*/
/*
* bpipe.c bi-directional pipe
*
* Kern Sibbald, November MMII
*
- * Version $Id$
*/
#include "bacula.h"
#include "jcr.h"
+#ifdef HAVE_GETRLIMIT
+#include <sys/resource.h>
+#else
+/* If not available, use a wrapper that will not use it */
+#define getrlimit(a,b) -1
+#endif
int execvp_errors[] = {
EACCES,
#if !defined(HAVE_WIN32)
static void build_argc_argv(char *cmd, int *bargc, char *bargv[], int max_arg);
+void build_sh_argc_argv(char *cmd, int *bargc, char *bargv[], int max_arg)
+{
+ bargv[0] = (char *)"/bin/sh";
+ bargv[1] = (char *)"-c";
+ bargv[2] = cmd;
+ bargv[3] = NULL;
+ *bargc = 3;
+}
+
/*
* Run an external program. Optionally wait a specified number
* of seconds. Program killed if wait exceeded. We open
* a bi-directional pipe so that the user can read from and
* write to the program.
*/
-BPIPE *open_bpipe(char *prog, int wait, const char *mode)
+BPIPE *open_bpipe(char *prog, int wait, const char *mode, char *envp[])
{
char *bargv[MAX_ARGV];
int bargc, i;
int readp[2], writep[2];
POOLMEM *tprog;
- int mode_read, mode_write;
+ int mode_read, mode_write, mode_shell;
BPIPE *bpipe;
int save_errno;
+#if !defined(HAVE_FCNTL_F_CLOSEM) && !defined(HAVE_CLOSEFROM)
+ struct rlimit rl;
+ int64_t rlimitResult=0;
+#endif
+ if (!prog || !*prog) {
+ /* execve(3) A component of the file does not name an existing file or file is an empty string. */
+ errno = ENOENT;
+ return NULL;
+ }
+
bpipe = (BPIPE *)malloc(sizeof(BPIPE));
memset(bpipe, 0, sizeof(BPIPE));
mode_read = (mode[0] == 'r');
mode_write = (mode[0] == 'w' || mode[1] == 'w');
+ /* mode is at least 2 bytes long, can be 3, rs, rws, ws */
+ mode_shell = (mode[1] == 's' || (mode[1] && mode[2] == 's'));
/* Build arguments for running program. */
tprog = get_pool_memory(PM_FNAME);
pm_strcpy(tprog, prog);
- build_argc_argv(tprog, &bargc, bargv, MAX_ARGV);
+ if (mode_shell) {
+ build_sh_argc_argv(tprog, &bargc, bargv, MAX_ARGV);
+
+ } else {
+ build_argc_argv(tprog, &bargc, bargv, MAX_ARGV);
+ }
+
+ /* Unable to parse the command, avoid segfault after the fork() */
+ if (bargc == 0 || bargv[0] == NULL) {
+ free_pool_memory(tprog);
+ free(bpipe);
+ /* execve(3) A component of the file does not name an existing file or file is an empty string. */
+ errno = ENOENT;
+ return NULL;
+ }
+
#ifdef xxxxxx
printf("argc=%d\n", bargc);
for (i=0; i<bargc; i++) {
errno = save_errno;
return NULL;
}
+
+ /* Many systems doesn't have the correct system call
+ * to determine the FD list to close.
+ */
+#if !defined(HAVE_FCNTL_F_CLOSEM) && !defined(HAVE_CLOSEFROM)
+ if (getrlimit(RLIMIT_NOFILE, &rl) == -1) {
+ rlimitResult = sysconf(_SC_OPEN_MAX);
+ } else {
+ rlimitResult = rl.rlim_max;
+ }
+#endif
+
/* Start worker process */
switch (bpipe->worker_pid = fork()) {
case -1: /* error */
dup2(readp[1], 1); /* dup our read to his stdout */
dup2(readp[1], 2); /* and his stderr */
}
- closelog(); /* close syslog if open */
- for (i=3; i<=32; i++) { /* close any open file descriptors */
+
+#if HAVE_FCNTL_F_CLOSEM
+ fcntl(3, F_CLOSEM);
+#elif HAVE_CLOSEFROM
+ closefrom(3);
+#else
+ for (i=rlimitResult; i >= 3; i--) {
close(i);
}
+#endif
+
+ /* Setup the environment if requested, we do not use execvpe()
+ * because it's not wildly available
+ * TODO: Implement envp to windows version of bpipe
+ */
+ setup_env(envp);
+
execvp(bargv[0], bargv); /* call the program */
/* Convert errno into an exit code for later analysis */
for (i=0; i< num_execvp_errors; i++) {
if (execvp_errors[i] == errno) {
- exit(200 + i); /* exit code => errno */
+ _exit(200 + i); /* exit code => errno */
}
}
- exit(255); /* unknown errno */
+ /* Do not flush stdio */
+ _exit(255); /* unknown errno */
default: /* parent */
break;
/* wait for worker child to exit */
for ( ;; ) {
- Dmsg2(800, "Wait for %d opt=%d\n", bpipe->worker_pid, wait_option);
+ Dmsg2(100, "Wait for %d opt=%d\n", bpipe->worker_pid, wait_option);
do {
wpid = waitpid(bpipe->worker_pid, &chldstatus, wait_option);
} while (wpid == -1 && (errno == EINTR || errno == EAGAIN));
if (wpid == bpipe->worker_pid || wpid == -1) {
berrno be;
stat = errno;
- Dmsg3(800, "Got break wpid=%d status=%d ERR=%s\n", wpid, chldstatus,
+ Dmsg3(100, "Got break wpid=%d status=%d ERR=%s\n", wpid, chldstatus,
wpid==-1?be.bstrerror():"none");
break;
}
- Dmsg3(800, "Got wpid=%d status=%d ERR=%s\n", wpid, chldstatus,
+ Dmsg3(100, "Got wpid=%d status=%d ERR=%s\n", wpid, chldstatus,
wpid==-1?strerror(errno):"none");
if (remaining_wait > 0) {
bmicrosleep(1, 0); /* wait one second */
if (WIFEXITED(chldstatus)) { /* process exit()ed */
stat = WEXITSTATUS(chldstatus);
if (stat != 0) {
- Dmsg1(800, "Non-zero status %d returned from child.\n", stat);
+ Dmsg1(100, "Non-zero status %d returned from child.\n", stat);
stat |= b_errno_exit; /* exit status returned */
}
- Dmsg1(800, "child status=%d\n", stat & ~b_errno_exit);
+ Dmsg1(100, "child status=%d\n", stat & ~b_errno_exit);
} else if (WIFSIGNALED(chldstatus)) { /* process died */
#ifndef HAVE_WIN32
stat = WTERMSIG(chldstatus);
#else
stat = 1; /* fake child status */
#endif
- Dmsg1(800, "Child died from signal %d\n", stat);
+ Dmsg1(100, "Child died from signal %d\n", stat);
stat |= b_errno_signal; /* exit signal returned */
}
}
stop_child_timer(bpipe->timer_id);
}
free(bpipe);
- Dmsg2(800, "returning stat=%d,%d\n", stat & ~(b_errno_exit|b_errno_signal), stat);
+ Dmsg2(100, "returning stat=%d,%d\n", stat & ~(b_errno_exit|b_errno_signal), stat);
return stat;
}
}
if (stat1 < 0) {
berrno be;
- Dmsg2(150, "Run program fgets stat=%d ERR=%s\n", stat1, be.bstrerror(errno));
+ Dmsg2(100, "Run program fgets stat=%d ERR=%s\n", stat1, be.bstrerror(errno));
} else if (stat1 != 0) {
- Dmsg1(150, "Run program fgets stat=%d\n", stat1);
+ Dmsg1(100, "Run program fgets stat=%d\n", stat1);
if (bpipe->timer_id) {
- Dmsg1(150, "Run program fgets killed=%d\n", bpipe->timer_id->killed);
+ Dmsg1(100, "Run program fgets killed=%d\n", bpipe->timer_id->killed);
/* NB: I'm not sure it is really useful for run_program. Without the
* following lines run_program would not detect if the program was killed
* by the watchdog. */
}
stat2 = close_bpipe(bpipe);
stat1 = stat2 != 0 ? stat2 : stat1;
- Dmsg1(150, "Run program returning %d\n", stat1);
+ Dmsg1(100, "Run program returning %d\n", stat1);
return stat1;
}
/*
* Run an external program. Optionally wait a specified number
- * of seconds. Program killed if wait exceeded (it is done by the
+ * of seconds. Program killed if wait exceeded (it is done by the
* watchdog, as fgets is a blocking function).
*
* If the watchdog kills the program, fgets returns, and ferror is set
* non-zero on error == berrno status
*
*/
-int run_program_full_output(char *prog, int wait, POOLMEM *&results)
+int run_program_full_output(char *prog, int wait, POOLMEM *&results, char *env[])
{
BPIPE *bpipe;
int stat1, stat2;
char *buf;
const int bufsize = 32000;
-
- sm_check(__FILE__, __LINE__, false);
+
+ Dsm_check(200);
tmp = get_pool_memory(PM_MESSAGE);
buf = (char *)malloc(bufsize+1);
-
+
results[0] = 0;
mode = (char *)"r";
- bpipe = open_bpipe(prog, wait, mode);
+ bpipe = open_bpipe(prog, wait, mode, env);
if (!bpipe) {
- return ENOENT;
+ stat1 = ENOENT;
+ goto bail_out;
}
-
- sm_check(__FILE__, __LINE__, false);
+
+ Dsm_check(200);
tmp[0] = 0;
while (1) {
buf[0] = 0;
pm_strcat(tmp, buf);
if (feof(bpipe->rfd)) {
stat1 = 0;
- Dmsg1(900, "Run program fgets stat=%d\n", stat1);
+ Dmsg1(100, "Run program fgets stat=%d\n", stat1);
break;
} else {
stat1 = ferror(bpipe->rfd);
}
if (stat1 < 0) {
berrno be;
- Dmsg2(200, "Run program fgets stat=%d ERR=%s\n", stat1, be.bstrerror());
+ Dmsg2(100, "Run program fgets stat=%d ERR=%s\n", stat1, be.bstrerror());
break;
} else if (stat1 != 0) {
- Dmsg1(900, "Run program fgets stat=%d\n", stat1);
+ Dmsg1(200, "Run program fgets stat=%d\n", stat1);
if (bpipe->timer_id && bpipe->timer_id->killed) {
- Dmsg1(250, "Run program saw fgets killed=%d\n", bpipe->timer_id->killed);
+ Dmsg1(100, "Run program saw fgets killed=%d\n", bpipe->timer_id->killed);
break;
}
}
* just as the timer kills it.
*/
if (bpipe->timer_id && bpipe->timer_id->killed) {
- Dmsg1(150, "Run program fgets killed=%d\n", bpipe->timer_id->killed);
+ Dmsg1(100, "Run program fgets killed=%d\n", bpipe->timer_id->killed);
pm_strcpy(tmp, _("Program killed by Bacula (timeout)\n"));
stat1 = ETIME;
}
pm_strcpy(results, tmp);
- Dmsg3(1900, "resadr=0x%x reslen=%d res=%s\n", results, strlen(results), results);
+ Dmsg3(200, "resadr=0x%x reslen=%d res=%s\n", results, strlen(results), results);
stat2 = close_bpipe(bpipe);
stat1 = stat2 != 0 ? stat2 : stat1;
-
- Dmsg1(900, "Run program returning %d\n", stat1);
+
+ Dmsg1(100, "Run program returning %d\n", stat1);
+bail_out:
free_pool_memory(tmp);
free(buf);
return stat1;
projects / bacula / bacula / blobdiff