Differential D7451 Diff 19183 head/usr.bin/xinstall/xinstall.c

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Show First 20 Lines • Show All 886 Lines • ▼ Show 20 Lines	if (dobackup) {
if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,		if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
suffix) != strlen(to_name) + strlen(suffix)) {		suffix) != strlen(to_name) + strlen(suffix)) {
unlink(tempfile);		unlink(tempfile);
errx(EX_OSERR, "%s: backup filename too long",		errx(EX_OSERR, "%s: backup filename too long",
to_name);		to_name);
}		}
if (verbose)		if (verbose)
(void)printf("install: %s -> %s\n", to_name, backup);		(void)printf("install: %s -> %s\n", to_name, backup);
if (rename(to_name, backup) < 0) {		if (unlink(backup) < 0 && errno != ENOENT) {
serrno = errno;		serrno = errno;
unlink(tempfile);		unlink(tempfile);
errno = serrno;		errno = serrno;
err(EX_OSERR, "rename: %s to %s", to_name,		err(EX_OSERR, "unlink: %s", backup);
		}
		if (link(to_name, backup) < 0) {
		serrno = errno;
		unlink(tempfile);
		errno = serrno;
		err(EX_OSERR, "link: %s to %s", to_name,
backup);		backup);
}		}
}		}
if (verbose)		if (verbose)
(void)printf("install: %s -> %s\n", from_name, to_name);		(void)printf("install: %s -> %s\n", from_name, to_name);
if (rename(tempfile, to_name) < 0) {		if (rename(tempfile, to_name) < 0) {
serrno = errno;		serrno = errno;
unlink(tempfile);		unlink(tempfile);
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