1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 14:47:44 +00:00

Kernel: Support open() with O_CREAT.

It's now possible to create zero-length files! :^)
Also hook up the new functionality in /bin/touch.
This commit is contained in:
Andreas Kling 2019-01-22 00:58:13 +01:00
parent a47f33bed3
commit f70136a324
9 changed files with 108 additions and 39 deletions

View file

@ -1,6 +1,26 @@
#include <stdio.h>
#include <errno.h>
#include <utime.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
static bool file_exists(const char* path)
{
struct stat st;
int rc = stat(path, &st);
if (rc < 0) {
if (errno == ENOENT)
return false;
}
if (rc == 0) {
return true;
}
perror("stat");
exit(1);
}
int main(int argc, char** argv)
{
@ -8,9 +28,22 @@ int main(int argc, char** argv)
fprintf(stderr, "usage: touch <path>\n");
return 1;
}
int rc = utime(argv[1], nullptr);
if (rc < 0)
perror("utime");
if (file_exists(argv[1])) {
int rc = utime(argv[1], nullptr);
if (rc < 0)
perror("utime");
} else {
int fd = open(argv[1], O_CREAT, 0010644);
if (fd < 0) {
perror("open");
return 1;
}
int rc = close(fd);
if (rc < 0) {
perror("close");
return 1;
}
}
return 0;
}