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authorDan McGee <dan@archlinux.org>2007-10-05 00:13:36 -0500
committerDan McGee <dan@archlinux.org>2007-10-08 20:46:55 -0500
commitb1613c26518abb55ae5fc970dccfb7e3c97398d1 (patch)
treed479a6193c1384b34dd44013273481c3af184ed0
parent3d8408759d16b1ecfa6e7981d0cc3db1f39163a4 (diff)
Clean up the scriptlet fork code a bit, honor the child return value
Signed-off-by: Dan McGee <dan@archlinux.org>
-rw-r--r--lib/libalpm/trans.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/lib/libalpm/trans.c b/lib/libalpm/trans.c
index 462b4d8b..22780899 100644
--- a/lib/libalpm/trans.c
+++ b/lib/libalpm/trans.c
@@ -608,6 +608,7 @@ int _alpm_runscriptlet(const char *root, const char *installfn,
}
_alpm_log(PM_LOG_DEBUG, "%s\n", cmdline);
+ /* fork- parent and child each have seperate code blocks below */
pid = fork();
if(pid == -1) {
_alpm_log(PM_LOG_ERROR, _("could not fork a new process (%s)\n"), strerror(errno));
@@ -616,13 +617,16 @@ int _alpm_runscriptlet(const char *root, const char *installfn,
}
if(pid == 0) {
+ /* this code runs for the child only (the actual chroot/exec) */
_alpm_log(PM_LOG_DEBUG, "chrooting in %s\n", root);
if(chroot(root) != 0) {
- _alpm_log(PM_LOG_ERROR, _("could not change the root directory (%s)\n"), strerror(errno));
+ _alpm_log(PM_LOG_ERROR, _("could not change the root directory (%s)\n"),
+ strerror(errno));
exit(1);
}
if(chdir("/") != 0) {
- _alpm_log(PM_LOG_ERROR, _("could not change directory to / (%s)\n"), strerror(errno));
+ _alpm_log(PM_LOG_ERROR, _("could not change directory to / (%s)\n"),
+ strerror(errno));
exit(1);
}
umask(0022);
@@ -630,11 +634,24 @@ int _alpm_runscriptlet(const char *root, const char *installfn,
execl("/bin/sh", "sh", "-c", cmdline, (char *)NULL);
exit(0);
} else {
- if(waitpid(pid, 0, 0) == -1) {
+ /* this code runs for the parent only (wait on the child) */
+ pid_t retpid;
+ int status;
+ retpid = waitpid(pid, &status, 0);
+ if(retpid == -1) {
_alpm_log(PM_LOG_ERROR, _("call to waitpid failed (%s)\n"),
strerror(errno));
retval = 1;
goto cleanup;
+ } else {
+ /* check the return status, make sure it is 0 (success) */
+ if(WIFEXITED(status)) {
+ _alpm_log(PM_LOG_DEBUG, "call to waitpid succeeded\n");
+ if(WEXITSTATUS(status) != 0) {
+ _alpm_log(PM_LOG_ERROR, _("scriptlet failed to execute correctly\n"));
+ retval = 1;
+ }
+ }
}
}