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main.c
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1#include <errno.h>
2#include <stdbool.h>
3#include <stdio.h>
4#include <stdlib.h>
5#include <string.h>
6#include <sys/io.h>
7
8int main(int argc, char** argv)
9{
10 for (int i = 1; i < argc; i++)
11 {
12 fd_t fd = open(argv[i]);
13 if (fd == ERR)
14 {
15 printf("open: failed to open %s (%s)\n", argv[i], strerror(errno));
16 return EXIT_FAILURE;
17 }
18
19 close(fd);
20 }
21
22 return EXIT_SUCCESS;
23}
errno
#define errno
Error number variable.
Definition errno.h:27
open
fd_t open(const char *path)
System call for opening files.
Definition open.c:9
close
uint64_t close(fd_t fd)
System call for closing files.
Definition close.c:9
fd_t
__UINT64_TYPE__ fd_t
A file descriptor.
Definition fd_t.h:12
ERR
#define ERR
Definition main.c:44
main
int main()
Definition main.c:97
printf
_PUBLIC int printf(const char *_RESTRICT format,...)
Definition printf.c:5
EXIT_SUCCESS
#define EXIT_SUCCESS
Definition stdlib.h:46
EXIT_FAILURE
#define EXIT_FAILURE
Definition stdlib.h:47
strerror
_PUBLIC char * strerror(int errnum)
Definition strerror.c:6