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if pidfile turned out to be !regular file, do not unlink it.

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It's most probably the /dev/null.
This commit is contained in:
Denis Vlasenko
2007-08-15 20:05:37 +00:00
parent 9f7b92a2e1
commit bb23c06919
4 changed files with 25 additions and 15 deletions
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12
include/libbb.h
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@@ -622,12 +622,14 @@ llist_t *llist_rev(llist_t *list);
/* start_stop_daemon and udhcpc are special - they want
* to create pidfiles regardless of FEATURE_PIDFILE */
#if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE)
int write_pidfile(const char *path);
#define remove_pidfile(f) ((void)unlink(f))
/* True only if we created pidfile which is *file*, not /dev/null etc */
extern smallint wrote_pidfile;
void write_pidfile(const char *path);
#define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0)
#else
/* Why? #defining it to 1 gives "warning: statement with no effect"... */
static ALWAYS_INLINE int write_pidfile(const char *path) { return 1; }
#define remove_pidfile(f) ((void)0)
enum { wrote_pidfile = 0 };
#define write_pidfile(path) ((void)0)
#define remove_pidfile(path) ((void)0)
#endif
enum {