diff options
Diffstat (limited to 'run-command.c')
-rw-r--r-- | run-command.c | 59 |
1 files changed, 28 insertions, 31 deletions
diff --git a/run-command.c b/run-command.c index 2a1041ef65..1c51043884 100644 --- a/run-command.c +++ b/run-command.c @@ -1,6 +1,7 @@ #include "cache.h" #include "run-command.h" #include "exec_cmd.h" +#include "argv-array.h" static inline void close_pair(int fd[2]) { @@ -67,23 +68,24 @@ static int child_notifier = -1; static void notify_parent(void) { - ssize_t unused; - unused = write(child_notifier, "", 1); + /* + * execvp failed. If possible, we'd like to let start_command + * know, so failures like ENOENT can be handled right away; but + * otherwise, finish_command will still report the error. + */ + xwrite(child_notifier, "", 1); } static NORETURN void die_child(const char *err, va_list params) { - char msg[4096]; - ssize_t unused; - int len = vsnprintf(msg, sizeof(msg), err, params); - if (len > sizeof(msg)) - len = sizeof(msg); - - unused = write(child_err, "fatal: ", 7); - unused = write(child_err, msg, len); - unused = write(child_err, "\n", 1); + vwritef(child_err, "fatal: ", err, params); exit(128); } + +static void error_child(const char *err, va_list params) +{ + vwritef(child_err, "error: ", err, params); +} #endif static inline void set_cloexec(int fd) @@ -124,9 +126,6 @@ static int wait_or_whine(pid_t pid, const char *argv0, int silent_exec_failure) if (code == 127) { code = -1; failed_errno = ENOENT; - if (!silent_exec_failure) - error("cannot run %s: %s", argv0, - strerror(ENOENT)); } } else { error("waitpid is confused (%s)", argv0); @@ -194,6 +193,7 @@ fail_pipe: } trace_argv_printf(cmd->argv, "trace: run_command:"); + fflush(NULL); #ifndef WIN32 { @@ -201,7 +201,6 @@ fail_pipe: if (pipe(notify_pipe)) notify_pipe[0] = notify_pipe[1] = -1; - fflush(NULL); cmd->pid = fork(); if (!cmd->pid) { /* @@ -214,6 +213,7 @@ fail_pipe: set_cloexec(child_err); } set_die_routine(die_child); + set_error_routine(error_child); close(notify_pipe[0]); set_cloexec(notify_pipe[1]); @@ -280,14 +280,14 @@ fail_pipe: } else { execvp(cmd->argv[0], (char *const*) cmd->argv); } - /* - * Do not check for cmd->silent_exec_failure; the parent - * process will check it when it sees this exit code. - */ - if (errno == ENOENT) + if (errno == ENOENT) { + if (!cmd->silent_exec_failure) + error("cannot run %s: %s", cmd->argv[0], + strerror(ENOENT)); exit(127); - else + } else { die_errno("cannot exec '%s'", cmd->argv[0]); + } } if (cmd->pid < 0) error("cannot fork() for %s: %s", cmd->argv[0], @@ -606,26 +606,23 @@ int finish_async(struct async *async) int run_hook(const char *index_file, const char *name, ...) { struct child_process hook; - const char **argv = NULL, *env[2]; + struct argv_array argv = ARGV_ARRAY_INIT; + const char *p, *env[2]; char index[PATH_MAX]; va_list args; int ret; - size_t i = 0, alloc = 0; if (access(git_path("hooks/%s", name), X_OK) < 0) return 0; va_start(args, name); - ALLOC_GROW(argv, i + 1, alloc); - argv[i++] = git_path("hooks/%s", name); - while (argv[i-1]) { - ALLOC_GROW(argv, i + 1, alloc); - argv[i++] = va_arg(args, const char *); - } + argv_array_push(&argv, git_path("hooks/%s", name)); + while ((p = va_arg(args, const char *))) + argv_array_push(&argv, p); va_end(args); memset(&hook, 0, sizeof(hook)); - hook.argv = argv; + hook.argv = argv.argv; hook.no_stdin = 1; hook.stdout_to_stderr = 1; if (index_file) { @@ -636,6 +633,6 @@ int run_hook(const char *index_file, const char *name, ...) } ret = run_command(&hook); - free(argv); + argv_array_clear(&argv); return ret; } |