Like write_or_die read_or_die reads the entire length requested
or it kills the current process with a die call.
Signed-off-by: Shawn O. Pearce <spearce@xxxxxxxxxxx>
---
cache.h | 1 +
write_or_die.c | 19 +++++++++++++++++++
2 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/cache.h b/cache.h
index 936555c..77f2338 100644
--- a/cache.h
+++ b/cache.h
@@ -428,6 +428,7 @@ extern char git_default_name[MAX_GITNAME];
extern char git_commit_encoding[MAX_ENCODING_LENGTH];
extern int copy_fd(int ifd, int ofd);
+extern void read_or_die(int fd, void *buf, size_t count);
extern void write_or_die(int fd, const void *buf, size_t count);
extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
diff --git a/write_or_die.c b/write_or_die.c
index bfe4eeb..a56d992 100644
--- a/write_or_die.c
+++ b/write_or_die.c
@@ -1,5 +1,24 @@
#include "cache.h"
+void read_or_die(int fd, void *buf, size_t count)
+{
+ char *p = buf;
+ ssize_t loaded;
+
+ while (count > 0) {
+ loaded = xread(fd, p, count);
+ if (loaded == 0)
+ die("unexpected end of file");
+ else if (loaded < 0) {
+ if (errno == EPIPE)
+ exit(0);
+ die("read error (%s)", strerror(errno));
+ }
+ count -= loaded;
+ p += loaded;
+ }
+}
+
void write_or_die(int fd, const void *buf, size_t count)
{
const char *p = buf;
--
1.4.4.3.g87d8
-
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html