59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
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#define _GNU_SOURCE 1
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdlib.h>
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struct {
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int mode;
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char *name;
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} modes[] = {
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{ O_APPEND, "O_APPEND" },
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{ O_ASYNC, "O_ASYNC" },
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{ O_CLOEXEC, "O_CLOEXEC" },
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{ O_CREAT, "O_CREAT" },
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{ O_DIRECT, "O_DIRECT" },
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{ O_DIRECTORY, "O_DIRECTORY" },
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{ O_EXCL, "O_EXCL" },
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{ O_LARGEFILE, "O_LARGEFILE" },
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{ O_NOATIME, "O_NOATIME" },
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{ O_NOCTTY, "O_NOCTTY" },
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{ O_NOFOLLOW, "O_NOFOLLOW" },
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{ O_NONBLOCK, "O_NONBLOCK" },
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{ O_NDELAY, "O_NDELAY" },
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{ O_SYNC, "O_SYNC" },
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{ O_TRUNC, "O_TRUNC" },
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};
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void dump_mode(int mode) {
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if ((mode & 3) == O_RDONLY) {
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printf("%7o %s\n", O_RDONLY, "O_RDONLY");
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} else
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if ((mode & 3) == O_WRONLY) {
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printf("%7o %s\n", O_WRONLY, "O_WRONLY");
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} else
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if ((mode & 3) == O_RDWR) {
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printf("%7o %s\n", O_RDWR, "O_RDWR");
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} else {
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printf("%7o %s\n", (mode & 3), "none");
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}
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for (int i = 0; i < sizeof(modes)/sizeof(modes[0]); i++) {
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if (modes[i].mode & mode) {
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printf("%7o %s\n", modes[i].mode, modes[i].name);
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}
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}
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printf("\n");
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}
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int main(int argc, char **argv) {
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if (argc == 1) {
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dump_mode(-1);
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} else {
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for (char **arg = argv+1; *arg; arg++) {
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int mode = strtoul(*arg, NULL, 0);
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dump_mode(mode);
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}
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}
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}
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