Both daemon.c and shell.c contain logic to open FDs 0/1/2 from
/dev/null if they are not already open. Move the function in daemon.c
to setup.c and use it in shell.c, too.
While there, remove a 'not' that inverted the meaning of the comment.
The point is indeed to *avoid* messing up.
Signed-off-by: Thomas Rast <tr...@inf.ethz.ch>
---
cache.h | 2 ++
daemon.c | 12 ------------
setup.c | 12 ++++++++++++
shell.c | 12 +++---------
4 files changed, 17 insertions(+), 21 deletions(-)
diff --git a/cache.h b/cache.h
index dd0fb33..f007724 100644
--- a/cache.h
+++ b/cache.h
@@ -425,6 +425,8 @@ extern void verify_filename(const char *prefix,
extern int set_git_dir_init(const char *git_dir, const char *real_git_dir,
int);
extern int init_db(const char *template_dir, unsigned int flags);
+extern void sanitize_stdfds(void);
+
#define alloc_nr(x) (((x)+16)*3/2)
/*
diff --git a/daemon.c b/daemon.c
index 6aeddcb..973ec38 100644
--- a/daemon.c
+++ b/daemon.c
@@ -1047,18 +1047,6 @@ static int service_loop(struct socketlist *socklist)
}
}
-/* if any standard file descriptor is missing open it to /dev/null */
-static void sanitize_stdfds(void)
-{
- int fd = open("/dev/null", O_RDWR, 0);
- while (fd != -1 && fd < 2)
- fd = dup(fd);
- if (fd == -1)
- die_errno("open /dev/null or dup failed");
- if (fd > 2)
- close(fd);
-}
-
#ifdef NO_POSIX_GOODIES
struct credentials;
diff --git a/setup.c b/setup.c
index 94c1e61..88aab94 100644
--- a/setup.c
+++ b/setup.c
@@ -908,3 +908,15 @@ const char *resolve_gitdir(const char *suspect)
return suspect;
return read_gitfile(suspect);
}
+
+/* if any standard file descriptor is missing open it to /dev/null */
+void sanitize_stdfds(void)
+{
+ int fd = open("/dev/null", O_RDWR, 0);
+ while (fd != -1 && fd < 2)
+ fd = dup(fd);
+ if (fd == -1)
+ die_errno("open /dev/null or dup failed");
+ if (fd > 2)
+ close(fd);
+}
diff --git a/shell.c b/shell.c
index 1429870..66350b2 100644
--- a/shell.c
+++ b/shell.c
@@ -147,7 +147,6 @@ int main(int argc, char **argv)
char *prog;
const char **user_argv;
struct commands *cmd;
- int devnull_fd;
int count;
git_setup_gettext();
@@ -156,15 +155,10 @@ int main(int argc, char **argv)
/*
* Always open file descriptors 0/1/2 to avoid clobbering files
- * in die(). It also avoids not messing up when the pipes are
- * dup'ed onto stdin/stdout/stderr in the child processes we spawn.
+ * in die(). It also avoids messing up when the pipes are dup'ed
+ * onto stdin/stdout/stderr in the child processes we spawn.
*/
- devnull_fd = open("/dev/null", O_RDWR);
- while (devnull_fd >= 0 && devnull_fd <= 2)
- devnull_fd = dup(devnull_fd);
- if (devnull_fd == -1)
- die_errno("opening /dev/null failed");
- close (devnull_fd);
+ sanitize_stdfds();
/*
* Special hack to pretend to be a CVS server
--
1.8.3.2.998.g1d087bc
--
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