62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/*
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* SPDX-FileCopyrightText: 2011 , Jonathan Nieder
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <config.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include "exitcodes.h"
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#include "prototypes.h"
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int run_command (const char *cmd, const char *argv[],
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/*@null@*/const char *envp[], /*@out@*/int *status)
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{
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pid_t pid, wpid;
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if (NULL == envp) {
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envp = (const char **)environ;
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}
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(void) fflush (stdout);
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(void) fflush (shadow_logfd);
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pid = fork ();
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if (0 == pid) {
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(void) execve (cmd, (char * const *) argv,
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(char * const *) envp);
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if (ENOENT == errno) {
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exit (E_CMD_NOTFOUND);
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}
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fprintf (shadow_logfd, "%s: cannot execute %s: %s\n",
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Prog, cmd, strerror (errno));
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exit (E_CMD_NOEXEC);
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} else if ((pid_t)-1 == pid) {
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fprintf (shadow_logfd, "%s: cannot execute %s: %s\n",
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Prog, cmd, strerror (errno));
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return -1;
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}
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do {
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wpid = waitpid (pid, status, 0);
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if ((pid_t)-1 == wpid && errno == ECHILD)
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break;
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} while ( ((pid_t)-1 == wpid && errno == EINTR)
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|| ((pid_t)-1 != wpid && wpid != pid));
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if ((pid_t)-1 == wpid) {
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fprintf (shadow_logfd, "%s: waitpid (status: %d): %s\n",
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Prog, *status, strerror (errno));
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return -1;
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}
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return 0;
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}
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