11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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***/
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "alloc-util.h"
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#include "fd-util.h"
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#include "io-util.h"
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#include "macro.h"
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static void test_sparse_write_one(int fd, const char *buffer, size_t n) {
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char check[n];
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(ftruncate(fd, 0) >= 0);
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assert_se(sparse_write(fd, buffer, n, 4) == (ssize_t) n);
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assert_se(lseek(fd, 0, SEEK_CUR) == (off_t) n);
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assert_se(ftruncate(fd, n) >= 0);
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(read(fd, check, n) == (ssize_t) n);
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assert_se(memcmp(buffer, check, n) == 0);
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}
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static void test_sparse_write(void) {
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const char test_a[] = "test";
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const char test_b[] = "\0\0\0\0test\0\0\0\0";
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const char test_c[] = "\0\0test\0\0\0\0";
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const char test_d[] = "\0\0test\0\0\0test\0\0\0\0test\0\0\0\0\0test\0\0\0test\0\0\0\0test\0\0\0\0\0\0\0\0";
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const char test_e[] = "test\0\0\0\0test";
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_cleanup_close_ int fd = -1;
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char fn[] = "/tmp/sparseXXXXXX";
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fd = mkostemp(fn, O_CLOEXEC);
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assert_se(fd >= 0);
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unlink(fn);
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test_sparse_write_one(fd, test_a, sizeof(test_a));
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test_sparse_write_one(fd, test_b, sizeof(test_b));
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test_sparse_write_one(fd, test_c, sizeof(test_c));
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test_sparse_write_one(fd, test_d, sizeof(test_d));
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test_sparse_write_one(fd, test_e, sizeof(test_e));
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}
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int main(void) {
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test_sparse_write();
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return 0;
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}
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