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42 lines
1003 B
C
42 lines
1003 B
C
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#include "cache.h"
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#include "refs.h"
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static FILE *refs_file;
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static const char *result_path, *lock_path;
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static void remove_lock_file(void)
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{
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if (lock_path)
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unlink(lock_path);
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}
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static int handle_one_ref(const char *path, const unsigned char *sha1)
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{
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fprintf(refs_file, "%s %s\n", sha1_to_hex(sha1), path);
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return 0;
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}
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int cmd_pack_refs(int argc, const char **argv, const char *prefix)
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{
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int fd;
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result_path = xstrdup(git_path("packed-refs"));
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lock_path = xstrdup(mkpath("%s.lock", result_path));
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fd = open(lock_path, O_CREAT | O_EXCL | O_WRONLY, 0666);
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if (fd < 0)
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die("unable to create new ref-pack file (%s)", strerror(errno));
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atexit(remove_lock_file);
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refs_file = fdopen(fd, "w");
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if (!refs_file)
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die("unable to create ref-pack file structure (%s)", strerror(errno));
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for_each_ref(handle_one_ref);
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fsync(fd);
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fclose(refs_file);
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if (rename(lock_path, result_path) < 0)
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die("unable to overwrite old ref-pack file (%s)", strerror(errno));
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lock_path = NULL;
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return 0;
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}
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