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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:50:00 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:50:00 +0000 |
commit | 333f7ecfa3e040191c66b2b92f6c117ca2cbac1d (patch) | |
tree | 178a8f140927896970f47930dae9213161268f10 /lib/spawn.c | |
parent | Initial commit. (diff) | |
download | shadow-upstream.tar.xz shadow-upstream.zip |
Adding upstream version 1:4.8.1.upstream/1%4.8.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/spawn.c')
-rw-r--r-- | lib/spawn.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/lib/spawn.c b/lib/spawn.c new file mode 100644 index 0000000..d0b5fb2 --- /dev/null +++ b/lib/spawn.c @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2011 , Jonathan Nieder + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the copyright holders or contributors may not be used to + * endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <config.h> + +#include <stdio.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> +#include <errno.h> +#include <string.h> +#include "exitcodes.h" +#include "prototypes.h" + +int run_command (const char *cmd, const char *argv[], + /*@null@*/const char *envp[], /*@out@*/int *status) +{ + pid_t pid, wpid; + + if (NULL == envp) { + envp = (const char **)environ; + } + + (void) fflush (stdout); + (void) fflush (stderr); + + pid = fork (); + if (0 == pid) { + (void) execve (cmd, (char * const *) argv, + (char * const *) envp); + if (ENOENT == errno) { + exit (E_CMD_NOTFOUND); + } + fprintf (stderr, "%s: cannot execute %s: %s\n", + Prog, cmd, strerror (errno)); + exit (E_CMD_NOEXEC); + } else if ((pid_t)-1 == pid) { + fprintf (stderr, "%s: cannot execute %s: %s\n", + Prog, cmd, strerror (errno)); + return -1; + } + + do { + wpid = waitpid (pid, status, 0); + if ((pid_t)-1 == wpid && errno == ECHILD) + break; + } while ( ((pid_t)-1 == wpid && errno == EINTR) + || ((pid_t)-1 != wpid && wpid != pid)); + + if ((pid_t)-1 == wpid) { + fprintf (stderr, "%s: waitpid (status: %d): %s\n", + Prog, *status, strerror (errno)); + return -1; + } + + return 0; +} + |