blob: cb2529f1fdbe7b7fdb04f8a1c5fee678ebf11e32 (
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#include <stdio.h>
#include <unistd.h>
FILE *fopen(const char *restrict filename, const char *restrict modes)
{
int flags = 0;
int fd;
char c;
while (c = *modes, c) {
switch (c) {
case 'r':
flags |= O_RDONLY;
break;
case 'w':
flags |= O_CREATE | O_WRONLY;
break;
case 'a':
flags |= O_APPEND;
break;
case '+':
flags |= O_RDWR;
break;
default:
return NULL;
}
}
if (flags == 0)
return NULL;
fd = open(filename, flags);
if (fd < 0)
return NULL;
return (FILE *)(uintptr_t)fd;
}
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