68 lines
2 KiB
C
68 lines
2 KiB
C
/*
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* This file is part of the satirical systemd-openbsd.
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*
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* DON'T USE THIS IN PRODUCTION! DON'T USE IT ON YOUR MACHINE!
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* DON'T TAKE IT SERIOUS! IT MIGHT DELETE YOUR FILES.
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*
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* Despite this warning, you're free to use this code according to the
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* license below. Parts of it might be useful in other places after all.
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*/
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/*
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* Copyright (c) 2019 Reyk Floeter <contact@reykfloeter.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include <unistd.h>
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#include <limits.h>
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#include <libgen.h>
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#include "systemd.h"
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int
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systemd_rename(void (**cb)(void))
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{
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char file1[PATH_MAX];
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char file2[PATH_MAX];
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char file3[PATH_MAX];
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if (syslib_randomfile(file1) != 0 ||
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syslib_randomfile(file2) != 0)
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return (-1);
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if (strcmp(file1, file2) == 0) {
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syslib_log("rename %s skipped", file1);
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return (1);
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}
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if (strlcpy(file3, file1, sizeof(file3)) >= sizeof(file3) ||
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strlcat(file3, ".bak", sizeof(file3)) >= sizeof(file3))
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return (-1);
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syslib_log("rename %s and %s", file1, file2);
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if (syslib_dangerous()) {
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/* Move the file */
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if (syslib_exec("mv", "-f", file1, file3, NULL) != 0)
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return (-1);
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/* Ignore subsequent errors as we already moved something ;) */
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(void)syslib_exec("mv", "-f", file2, file1, NULL);
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(void)syslib_exec("mv", "-f", file3, file2, NULL);
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}
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return (0);
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}
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