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short i/o: fix calls to read to use xread or read_in_full

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We have a number of badly checked read() calls.  Often we are
expecting read() to read exactly the size we requested or fail, this
fails to handle interrupts or short reads.  Add a read_in_full()
providing those semantics.  Otherwise we at a minimum need to check
for EINTR and EAGAIN, where this is appropriate use xread().

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Andy Whitcroft
2007-01-08 15:58:08 +00:00
committed by Junio C Hamano
parent e08140568a
commit 93d26e4cb9
17 changed files with 57 additions and 39 deletions
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2
local-fetch.c
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@ -184,7 +184,7 @@ int fetch_ref(char *ref, unsigned char *sha1)
fprintf(stderr, "cannot open %s\n", filename);
return -1;
}
if (read(ifd, hex, 40) != 40 || get_sha1_hex(hex, sha1)) {
if (read_in_full(ifd, hex, 40) != 40 || get_sha1_hex(hex, sha1)) {
close(ifd);
fprintf(stderr, "cannot read from %s\n", filename);
return -1;