[PATCH] Alter sha1close() 3rd argument to request flush only
From: Dana How <hidden>
Date: 2016-06-15 22:43:09
Subsystem:
the rest · Maintainer:
Linus Torvalds
update=0 suppressed writing the final SHA-1 but was not used. Now final=0 suppresses SHA-1 finalization, SHA-1 writing, and closing -- in other words, only flush the buffer. Signed-off-by: Dana L. How <redacted> --- csum-file.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/csum-file.c b/csum-file.c
index 7c806ad..9913cb5 100644
--- a/csum-file.c
+++ b/csum-file.c@@ -29,18 +29,20 @@ static void sha1flush(struct sha1file *f, unsigned int count) } } -int sha1close(struct sha1file *f, unsigned char *result, int update) +int sha1close(struct sha1file *f, unsigned char *result, int final) { unsigned offset = f->offset; if (offset) { SHA1_Update(&f->ctx, f->buffer, offset); sha1flush(f, offset); + f->offset = 0; } + if (!final) + return 0; /* only want to flush (no checksum write, no close) */ SHA1_Final(f->buffer, &f->ctx); if (result) hashcpy(result, f->buffer); - if (update) - sha1flush(f, 20); + sha1flush(f, 20); if (close(f->fd)) die("%s: sha1 file error on close (%s)", f->name, strerror(errno)); free(f);
--
1.5.2.rc0.787.g0014