зеркало из https://github.com/microsoft/git.git
Create read_or_die utility routine.
Like write_or_die read_or_die reads the entire length requested or it kills the current process with a die call. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
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Родитель
2dc3a23409
Коммит
75025ccdb7
1
cache.h
1
cache.h
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@ -428,6 +428,7 @@ extern char *git_commit_encoding;
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extern char *git_log_output_encoding;
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extern int copy_fd(int ifd, int ofd);
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extern void read_or_die(int fd, void *buf, size_t count);
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extern void write_or_die(int fd, const void *buf, size_t count);
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extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
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@ -1,5 +1,21 @@
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#include "cache.h"
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void read_or_die(int fd, void *buf, size_t count)
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{
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char *p = buf;
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ssize_t loaded;
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while (count > 0) {
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loaded = xread(fd, p, count);
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if (loaded == 0)
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die("unexpected end of file");
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else if (loaded < 0)
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die("read error (%s)", strerror(errno));
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count -= loaded;
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p += loaded;
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}
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}
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void write_or_die(int fd, const void *buf, size_t count)
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{
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const char *p = buf;
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