ref: e2fe38d6738c7d231fd926a36a0b1e173af7f2d2
dir: /lib/c/fopen.c/
#include <errno.h>
#include <stdio.h>
#undef fopen
FILE *
fopen(const char * restrict name, const char * restrict mode)
{
FILE *fp;
for (fp = __iob; fp < &__iob[FILE_MAX]; ++fp) {
if (fp->flags & (_IOREAD | _IOWRITE | _IORW) == 0)
break;
}
if (fp == &__iob[FILE_MAX]) {
errno = ENOMEM;
return NULL;
}
return _fpopen(name, mode, fp);
}