Merge branch 'rs/sequencer-oidset-insert-avoids-dups' into maint

diff --git a/run-command.c b/run-command.c
index 12c94c1dbe5a720a7581af81516b6884fc25d8d0..d679cc267c39b9fb34f57078db5db12ed591b7e2 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -245,7 +245,7 @@ int sane_execvp(const char *file, char * const argv[])
 static const char **prepare_shell_cmd(struct argv_array *out, const char **argv)
 {
        if (!argv[0])
-               die("BUG: shell command is empty");
+               BUG("shell command is empty");
 
        if (strcspn(argv[0], "|&;<>()$`\\\"' \t\n*?[#~=%") != strlen(argv[0])) {
 #ifndef GIT_WINDOWS_NATIVE
@@ -380,10 +380,10 @@ static void child_err_spew(struct child_process *cmd, struct child_err *cerr)
        set_error_routine(old_errfn);
 }
 
-static void prepare_cmd(struct argv_array *out, const struct child_process *cmd)
+static int prepare_cmd(struct argv_array *out, const struct child_process *cmd)
 {
        if (!cmd->argv[0])
-               die("BUG: command is empty");
+               BUG("command is empty");
 
        /*
         * Add SHELL_PATH so in the event exec fails with ENOEXEC we can
@@ -403,16 +403,22 @@ static void prepare_cmd(struct argv_array *out, const struct child_process *cmd)
        /*
         * If there are no '/' characters in the command then perform a path
         * lookup and use the resolved path as the command to exec.  If there
-        * are no '/' characters or if the command wasn't found in the path,
-        * have exec attempt to invoke the command directly.
+        * are '/' characters, we have exec attempt to invoke the command
+        * directly.
         */
        if (!strchr(out->argv[1], '/')) {
                char *program = locate_in_PATH(out->argv[1]);
                if (program) {
                        free((char *)out->argv[1]);
                        out->argv[1] = program;
+               } else {
+                       argv_array_clear(out);
+                       errno = ENOENT;
+                       return -1;
                }
        }
+
+       return 0;
 }
 
 static char **prep_childenv(const char *const *deltaenv)
@@ -471,15 +477,12 @@ struct atfork_state {
        sigset_t old;
 };
 
-#ifndef NO_PTHREADS
-static void bug_die(int err, const char *msg)
-{
-       if (err) {
-               errno = err;
-               die_errno("BUG: %s", msg);
-       }
-}
-#endif
+#define CHECK_BUG(err, msg) \
+       do { \
+               int e = (err); \
+               if (e) \
+                       BUG("%s: %s", msg, strerror(e)); \
+       } while(0)
 
 static void atfork_prepare(struct atfork_state *as)
 {
@@ -491,9 +494,9 @@ static void atfork_prepare(struct atfork_state *as)
        if (sigprocmask(SIG_SETMASK, &all, &as->old))
                die_errno("sigprocmask");
 #else
-       bug_die(pthread_sigmask(SIG_SETMASK, &all, &as->old),
+       CHECK_BUG(pthread_sigmask(SIG_SETMASK, &all, &as->old),
                "blocking all signals");
-       bug_die(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &as->cs),
+       CHECK_BUG(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &as->cs),
                "disabling cancellation");
 #endif
 }
@@ -504,9 +507,9 @@ static void atfork_parent(struct atfork_state *as)
        if (sigprocmask(SIG_SETMASK, &as->old, NULL))
                die_errno("sigprocmask");
 #else
-       bug_die(pthread_setcancelstate(as->cs, NULL),
+       CHECK_BUG(pthread_setcancelstate(as->cs, NULL),
                "re-enabling cancellation");
-       bug_die(pthread_sigmask(SIG_SETMASK, &as->old, NULL),
+       CHECK_BUG(pthread_sigmask(SIG_SETMASK, &as->old, NULL),
                "restoring signal mask");
 #endif
 }
@@ -722,6 +725,12 @@ int start_command(struct child_process *cmd)
        struct child_err cerr;
        struct atfork_state as;
 
+       if (prepare_cmd(&argv, cmd) < 0) {
+               failed_errno = errno;
+               cmd->pid = -1;
+               goto end_of_spawn;
+       }
+
        if (pipe(notify_pipe))
                notify_pipe[0] = notify_pipe[1] = -1;
 
@@ -732,7 +741,6 @@ int start_command(struct child_process *cmd)
                set_cloexec(null_fd);
        }
 
-       prepare_cmd(&argv, cmd);
        childenv = prep_childenv(cmd->env);
        atfork_prepare(&as);
 
@@ -860,6 +868,8 @@ int start_command(struct child_process *cmd)
        argv_array_clear(&argv);
        free(childenv);
 }
+end_of_spawn:
+
 #else
 {
        int fhin = 0, fhout = 1, fherr = 2;
@@ -967,7 +977,7 @@ int run_command(struct child_process *cmd)
        int code;
 
        if (cmd->out < 0 || cmd->err < 0)
-               die("BUG: run_command with a pipe can cause deadlock");
+               BUG("run_command with a pipe can cause deadlock");
 
        code = start_command(cmd);
        if (code)
@@ -1557,7 +1567,7 @@ static void pp_init(struct parallel_processes *pp,
 
        pp->data = data;
        if (!get_next_task)
-               die("BUG: you need to specify a get_next_task function");
+               BUG("you need to specify a get_next_task function");
        pp->get_next_task = get_next_task;
 
        pp->start_failure = start_failure ? start_failure : default_start_failure;
@@ -1619,7 +1629,7 @@ static int pp_start_one(struct parallel_processes *pp)
                if (pp->children[i].state == GIT_CP_FREE)
                        break;
        if (i == pp->max_processes)
-               die("BUG: bookkeeping is hard");
+               BUG("bookkeeping is hard");
 
        code = pp->get_next_task(&pp->children[i].process,
                                 &pp->children[i].err,