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#include <assert.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <utime.h>
#include <sys/stat.h>
void setup() {
mkdir("writeable", 0777);
mkdir("unwriteable", 0111);
}
void cleanup() {
rmdir("writeable");
rmdir("unwriteable");
}
void test() {
struct stat s;
// currently, the most recent timestamp is shared for atime,
// ctime and mtime. using unique values for each in the test
// will fail
struct utimbuf t = {1000000000, 1000000000};
utime("writeable", &t);
assert(!errno);
memset(&s, 0, sizeof s);
stat("writeable", &s);
assert(s.st_atime == t.actime);
assert(s.st_mtime == t.modtime);
// write permissions aren't checked when setting node
// attributes unless the user uid isn't the owner (so
// therefor, this should work fine)
utime("unwriteable", &t);
assert(!errno);
memset(&s, 0, sizeof s);
stat("unwriteable", &s);
assert(s.st_atime == t.actime);
assert(s.st_mtime == t.modtime);
puts("success");
}
int main() {
atexit(cleanup);
signal(SIGABRT, cleanup);
setup();
test();
return EXIT_SUCCESS;
}
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