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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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cache.h
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@ -432,6 +432,7 @@ extern char *git_commit_encoding;
extern char *git_log_output_encoding;
extern int copy_fd(int ifd, int ofd);
extern int read_in_full(int fd, void *buf, size_t count);
extern void read_or_die(int fd, void *buf, size_t count);
extern int write_in_full(int fd, const void *buf, size_t count);
extern void write_or_die(int fd, const void *buf, size_t count);