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Make pack creation always fsync() the result

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This means that we can depend on packs always being stable on disk,
simplifying a lot of the object serialization worries.  And unlike loose
objects, serializing pack creation IO isn't going to be a performance
killer.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Linus Torvalds
2008-05-30 08:42:16 -07:00
committed by Junio C Hamano
parent d2b3691b61
commit 4c81b03e30
8 changed files with 24 additions and 6 deletions
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7
csum-file.c
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@ -32,21 +32,24 @@ static void sha1flush(struct sha1file *f, unsigned int count)
}
}
int sha1close(struct sha1file *f, unsigned char *result, int final)
int sha1close(struct sha1file *f, unsigned char *result, unsigned int flags)
{
int fd;
unsigned offset = f->offset;
if (offset) {
SHA1_Update(&f->ctx, f->buffer, offset);
sha1flush(f, offset);
f->offset = 0;
}
if (final) {
if (flags & (CSUM_CLOSE | CSUM_FSYNC)) {
/* write checksum and close fd */
SHA1_Final(f->buffer, &f->ctx);
if (result)
hashcpy(result, f->buffer);
sha1flush(f, 20);
if (flags & CSUM_FSYNC)
fsync_or_die(f->fd, f->name);
if (close(f->fd))
die("%s: sha1 file error on close (%s)",
f->name, strerror(errno));