From d34cf19b8987ae0f0806e257edf877238d044747 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 11 Jan 2007 20:23:00 -0800 Subject: [PATCH] Clean up write_in_full() users With the new-and-improved write_in_full() semantics, where a partial write simply always returns a real error (and always sets 'errno' when that happens, including for the disk full case), a lot of the callers of write_in_full() were just unnecessarily complex. In particular, there's no reason to ever check for a zero length or return: if the length was zero, we'll return zero, otherwise, if a disk full resulted in the actual write() system call returning zero the write_in_full() logic would have correctly turned that into a negative return value, with 'errno' set to ENOSPC. I really wish every "write_in_full()" user would just check against "<0" now, but this fixes the nasty and stupid ones. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano --- sha1_file.c | 9 +-------- write_or_die.c | 31 +++---------------------------- 2 files changed, 4 insertions(+), 36 deletions(-) diff --git a/sha1_file.c b/sha1_file.c index 18dd89b50..2a5be53fa 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -1618,14 +1618,7 @@ int move_temp_to_file(const char *tmpfile, const char *filename) static int write_buffer(int fd, const void *buf, size_t len) { - ssize_t size; - - if (!len) - return 0; - size = write_in_full(fd, buf, len); - if (!size) - return error("file write: disk full"); - if (size < 0) + if (write_in_full(fd, buf, len) < 0) return error("file write error (%s)", strerror(errno)); return 0; } diff --git a/write_or_die.c b/write_or_die.c index 488de721d..1224cac5d 100644 --- a/write_or_die.c +++ b/write_or_die.c @@ -58,14 +58,7 @@ int write_in_full(int fd, const void *buf, size_t count) void write_or_die(int fd, const void *buf, size_t count) { - ssize_t written; - - if (!count) - return; - written = write_in_full(fd, buf, count); - if (written == 0) - die("disk full?"); - else if (written < 0) { + if (write_in_full(fd, buf, count) < 0) { if (errno == EPIPE) exit(0); die("write error (%s)", strerror(errno)); @@ -74,16 +67,7 @@ void write_or_die(int fd, const void *buf, size_t count) int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg) { - ssize_t written; - - if (!count) - return 1; - written = write_in_full(fd, buf, count); - if (written == 0) { - fprintf(stderr, "%s: disk full?\n", msg); - return 0; - } - else if (written < 0) { + if (write_in_full(fd, buf, count) < 0) { if (errno == EPIPE) exit(0); fprintf(stderr, "%s: write error (%s)\n", @@ -96,16 +80,7 @@ int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg) int write_or_whine(int fd, const void *buf, size_t count, const char *msg) { - ssize_t written; - - if (!count) - return 1; - written = write_in_full(fd, buf, count); - if (written == 0) { - fprintf(stderr, "%s: disk full?\n", msg); - return 0; - } - else if (written < 0) { + if (write_in_full(fd, buf, count) < 0) { fprintf(stderr, "%s: write error (%s)\n", msg, strerror(errno)); return 0; -- 2.30.2