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86 lines
2.4 KiB
86 lines
2.4 KiB
#include <assert.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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int main(int argc, char *argv[]) {
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if (argc != 2) {
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fprintf(stderr, "usage: %s <dir>\n", argv[0]);
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return EXIT_FAILURE;
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}
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char *filename;
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int n = asprintf(&filename, "%s/file", argv[1]);
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assert(n > 0);
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n = creat(filename, S_IRUSR|S_IWUSR);
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assert(n >= 0);
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char *linkname;
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n = asprintf(&linkname, "%s/symlink", argv[1]);
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assert(n > 0);
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n = symlink("file", linkname);
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assert(n == 0);
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struct stat file_statbuf;
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struct stat link_statbuf;
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// Test stat.
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n = stat(filename, &file_statbuf);
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assert(n == 0);
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assert(file_statbuf.st_size == 0);
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assert(S_ISREG(file_statbuf.st_mode));
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n = stat(linkname, &link_statbuf);
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assert(n == 0);
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assert(link_statbuf.st_size == 0);
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assert(S_ISREG(link_statbuf.st_mode));
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assert(file_statbuf.st_dev == link_statbuf.st_dev);
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assert(file_statbuf.st_dev == link_statbuf.st_dev);
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assert(file_statbuf.st_ino == link_statbuf.st_ino);
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assert(file_statbuf.st_mode == link_statbuf.st_mode);
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assert(file_statbuf.st_uid == link_statbuf.st_uid);
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assert(file_statbuf.st_gid == link_statbuf.st_gid);
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assert(file_statbuf.st_rdev == link_statbuf.st_rdev);
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assert(file_statbuf.st_size == link_statbuf.st_size);
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assert(file_statbuf.st_blksize == link_statbuf.st_blksize);
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assert(file_statbuf.st_blocks == link_statbuf.st_blocks);
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// NB: `atim` is explicitly not compared here
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assert(file_statbuf.st_mtim.tv_sec == link_statbuf.st_mtim.tv_sec);
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assert(file_statbuf.st_mtim.tv_nsec == link_statbuf.st_mtim.tv_nsec);
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assert(file_statbuf.st_ctim.tv_sec == link_statbuf.st_ctim.tv_sec);
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assert(file_statbuf.st_ctim.tv_nsec == link_statbuf.st_ctim.tv_nsec);
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// Test lstat.
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n = lstat(filename, &file_statbuf);
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assert(n == 0);
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assert(file_statbuf.st_size == 0);
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assert(S_ISREG(file_statbuf.st_mode));
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n = lstat(linkname, &link_statbuf);
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assert(n == 0);
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assert(link_statbuf.st_size != 0);
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assert(S_ISLNK(link_statbuf.st_mode));
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assert(file_statbuf.st_dev == link_statbuf.st_dev);
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assert(link_statbuf.st_ino != file_statbuf.st_ino);
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n = unlink(filename);
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assert(n == 0);
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n = unlink(linkname);
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assert(n == 0);
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free(filename);
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free(linkname);
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return 0;
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}
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