diff options
Diffstat (limited to 'client/file.c')
| -rw-r--r-- | client/file.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/client/file.c b/client/file.c index 5002d01..8e16103 100644 --- a/client/file.c +++ b/client/file.c @@ -40,9 +40,13 @@ write_file(const char *name, const void *data, size_t length) die("write to %s truncated", temp); if (close(fd) < 0) sysdie("close of %s failed (file probably truncated)", temp); - if (access(name, F_OK) == 0) + if (access(name, F_OK) == 0) { + if (access(backup, F_OK) == 0) + if (unlink(backup) < 0) + sysdie("unlink of old backup %s failed", backup); if (link(name, backup) < 0) sysdie("link of %s to %s failed", name, backup); + } if (rename(temp, name) < 0) sysdie("rename of %s to %s failed", temp, name); free(temp); |