mirror of
https://github.com/git/git.git
synced 2024-11-06 17:23:00 +01:00
b1bf95bba2
Just before updating a ref,
$GIT_DIR/hooks/update refname old-sha1 new-sha1
is called if executable. The hook can decline the ref to be
updated by exiting with a non-zero status, or allow it to be
updated by exiting with a zero status. The mechanism also
allows e.g sending of a mail with pushed commits on the remote
repository.
Documentation update with an example hook is included.
jc: The credits of the basic idea and initial implementation go
to Josef, but I ended up rewriting major parts of his patch, so
bugs are all mine. Also I changed the semantics for the hook
from his original version (which were post-update hook) so that
the hook can optionally decline to update the ref, and also can
be used to implement the overall cleanups. The latter was
primarily to implement a suggestion from Linus that calling
update-server-info should be made optional.
Signed-off-by: Junio C Hamano <junkio@cox.net>
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
#include "cache.h"
|
|
#include "run-command.h"
|
|
#include <sys/wait.h>
|
|
|
|
static int run_external_command(int argc, const char **argv)
|
|
{
|
|
pid_t pid = fork();
|
|
|
|
if (pid < 0)
|
|
return -ERR_RUN_COMMAND_FORK;
|
|
if (!pid) {
|
|
execvp(argv[0], (char *const*) argv);
|
|
return -ERR_RUN_COMMAND_EXEC;
|
|
}
|
|
for (;;) {
|
|
int status, code;
|
|
int retval = waitpid(pid, &status, 0);
|
|
|
|
if (retval < 0) {
|
|
if (errno == EINTR)
|
|
continue;
|
|
error("waitpid failed (%s)", strerror(retval));
|
|
return -ERR_RUN_COMMAND_WAITPID;
|
|
}
|
|
if (retval != pid)
|
|
return -ERR_RUN_COMMAND_WAITPID_WRONG_PID;
|
|
if (WIFSIGNALED(status))
|
|
return -ERR_RUN_COMMAND_WAITPID_SIGNAL;
|
|
|
|
if (!WIFEXITED(status))
|
|
return -ERR_RUN_COMMAND_WAITPID_NOEXIT;
|
|
code = WEXITSTATUS(status);
|
|
if (code)
|
|
return -code;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int run_command(const char *cmd, ...)
|
|
{
|
|
int argc;
|
|
const char *argv[MAX_RUN_COMMAND_ARGS];
|
|
const char *arg;
|
|
va_list param;
|
|
|
|
fprintf(stderr, "run-command %s (%d)\n", cmd, ERR_RUN_COMMAND_EXEC);
|
|
|
|
va_start(param, cmd);
|
|
argv[0] = cmd;
|
|
argc = 1;
|
|
while (argc < MAX_RUN_COMMAND_ARGS) {
|
|
arg = argv[argc++] = va_arg(param, char *);
|
|
if (!arg)
|
|
break;
|
|
}
|
|
va_end(param);
|
|
if (MAX_RUN_COMMAND_ARGS <= argc)
|
|
return error("too many args to run %s", cmd);
|
|
return run_external_command(argc, argv);
|
|
}
|