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Make "git-checkout" create files with O_EXCL

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We should always have unlinked any old ones before, but this just makes
sure that we never over-write any old file.

A quick "grep" now shows that all the core tools that open files for
writing use O_EXCL, ie we never overwrite an existing file in place.
This commit is contained in:
Linus Torvalds 2005-07-13 17:27:48 -07:00
parent 1b668341db
commit 2408cff9f7
1 changed files with 2 additions and 2 deletions
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4
entry.c
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@ -62,11 +62,11 @@ static int create_file(const char *path, unsigned int mode, int force)
int fd;
mode = (mode & 0100) ? 0777 : 0666;
fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
fd = open(path, O_WRONLY | O_TRUNC | O_CREAT | O_EXCL, mode);
if (fd < 0) {
if (errno == EISDIR && force) {
remove_subtree(path);
fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
fd = open(path, O_WRONLY | O_TRUNC | O_CREAT | O_EXCL, mode);
}
}
return fd;