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error_routine: use parent's stderr if exec fails

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The new process's error output may be redirected elsewhere, but if
the exec fails, output should still go to the parent's stderr. This
has already been done for the die_routine. Do the same for
error_routine.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Clemens Buchacher 2011-07-27 23:32:34 +02:00 committed by Junio C Hamano
parent 2579e1d293
commit 3bc4181fde
3 changed files with 27 additions and 8 deletions
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2
git-compat-util.h
View File

@ -236,6 +236,7 @@ extern char *gitbasename(char *);
/* General helper functions */
extern void vreportf(const char *prefix, const char *err, va_list params);
extern void vwritef(int fd, const char *prefix, const char *err, va_list params);
extern NORETURN void usage(const char *err);
extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
@ -244,6 +245,7 @@ extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params));
extern void set_error_routine(void (*routine)(const char *err, va_list params));
extern int prefixcmp(const char *str, const char *prefix);
extern int suffixcmp(const char *str, const char *suffix);

15
run-command.c
View File

@ -77,16 +77,14 @@ static void notify_parent(void)
static NORETURN void die_child(const char *err, va_list params)
{
char msg[4096];
int len = vsnprintf(msg, sizeof(msg), err, params);
if (len > sizeof(msg))
len = sizeof(msg);
write_in_full(child_err, "fatal: ", 7);
write_in_full(child_err, msg, len);
write_in_full(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)
@ -217,6 +215,7 @@ int start_command(struct child_process *cmd)
set_cloexec(child_err);
}
set_die_routine(die_child);
set_error_routine(error_child);
close(notify_pipe[0]);
set_cloexec(notify_pipe[1]);

18
usage.c
View File

@ -4,6 +4,7 @@
* Copyright (C) Linus Torvalds, 2005
*/
#include "git-compat-util.h"
#include "cache.h"
void vreportf(const char *prefix, const char *err, va_list params)
{
@ -12,6 +13,18 @@ void vreportf(const char *prefix, const char *err, va_list params)
fprintf(stderr, "%s%s\n", prefix, msg);
}
void vwritef(int fd, const char *prefix, const char *err, va_list params)
{
char msg[4096];
int len = vsnprintf(msg, sizeof(msg), err, params);
if (len > sizeof(msg))
len = sizeof(msg);
write_in_full(fd, prefix, strlen(prefix));
write_in_full(fd, msg, len);
write_in_full(fd, "\n", 1);
}
static NORETURN void usage_builtin(const char *err, va_list params)
{
vreportf("usage: ", err, params);
@ -46,6 +59,11 @@ void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list param
die_routine = routine;
}
void set_error_routine(void (*routine)(const char *err, va_list params))
{
error_routine = routine;
}
void NORETURN usagef(const char *err, ...)
{
va_list params;