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Fix cmd_run overwriting the environment

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Some commands need the environment to function properly. One such
example is check_ssh and check_by_ssh when a SOCKS proxy is required.

This patch use setenv and extern char **environ to alter and pass the
new environment to the child process Those modules have been added to
Gnulib for portability.
This commit is contained in:
Thomas Guyot-Sionnest 2010-07-02 12:55:19 -04:00
parent 6b60516061
commit cf2bcf6c7a
2 changed files with 6 additions and 4 deletions
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1
NEWS
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@ -29,6 +29,7 @@ This file documents the major additions and syntax changes between releases.
Fix translations when extra-opts aren't enabled (Jan Wagner - #2832884)
Fix parsing of multi-line strings in check_snmp (broken in 1.4.14) and enhance output in such case (#2832451)
Fix detection of pst3 64-bit compile flags with Sun CC
Fix cmd_run overwriting the environment, which would break some commands that needed it
WARNINGS
Updated developer documentation to say that performance labels should not have an equals sign or
single quote in the label

9
lib/utils_cmd.c
View file

@ -48,6 +48,9 @@
# include <sys/wait.h>
#endif
/* used in _cmd_open to pass the environment to commands */
extern char **environ;
/** macros **/
#ifndef WEXITSTATUS
# define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
@ -122,7 +125,6 @@ cmd_init (void)
static int
_cmd_open (char *const *argv, int *pfd, int *pfderr)
{
char *env[2];
pid_t pid;
#ifdef RLIMIT_CORE
struct rlimit limit;
@ -137,8 +139,7 @@ _cmd_open (char *const *argv, int *pfd, int *pfderr)
if (!_cmd_pids)
CMD_INIT;
env[0] = strdup ("LC_ALL=C");
env[1] = '\0';
setenv("LC_ALL", "C", 1);
if (pipe (pfd) < 0 || pipe (pfderr) < 0 || (pid = fork ()) < 0)
return -1; /* errno set by the failing function */
@ -169,7 +170,7 @@ _cmd_open (char *const *argv, int *pfd, int *pfderr)
if (_cmd_pids[i] > 0)
close (i);
execve (argv[0], argv, env);
execve (argv[0], argv, environ);
_exit (STATE_UNKNOWN);
}