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-rw-r--r--src/daemon.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/src/daemon.c b/src/daemon.c
index a8278c4..71e0226 100644
--- a/src/daemon.c
+++ b/src/daemon.c
@@ -21,6 +21,7 @@
*/
#include "daemon.h"
#include <ctype.h>
+#include <signal.h>
#include <stdarg.h>
#include <sys/stat.h>
#include <sys/file.h>
@@ -43,16 +44,27 @@ extern char **environ;
#define PIO(FUN) \
char *buffer = buf; \
ssize_t r, n = 0; \
+ int saved_errno = 0; \
+ sigset_t mask, oldmask; \
+ sigfillset(&mask); \
+ sigprocmask(SIG_BLOCK, &mask, &oldmask); \
while (nbyte) { \
- r = FUN(fildes, buffer, nbyte, (off_t)offset); \
- if (r < 0) return -1; \
- if (r == 0) break; \
+ t (r = FUN(fildes, buffer, nbyte, (off_t)offset), r < 0); \
+ if (r == 0) \
+ break; \
n += r; \
nbyte -= (size_t)r; \
offset += (size_t)r; \
buffer += (size_t)r; \
} \
- return n
+done: \
+ sigprocmask(SIG_SETMASK, &oldmask, NULL); \
+ errno = saved_errno; \
+ return n; \
+fail: \
+ saved_errno = errno; \
+ n = -1; \
+ goto done
/**