Rich Felker
594c827a22
open is handled specially because it is used from so many places, in so many variants (2 or 3 arguments, setting errno or not, and cancellable or not). trying to do it as a function would not only increase bloat, but would also risk subtle breakage. this is the first step towards supporting "new" archs where linux lacks "old" syscalls.
22 lines
438 B
C
22 lines
438 B
C
#include "stdio_impl.h"
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#include <fcntl.h>
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#include <string.h>
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FILE *__fopen_rb_ca(const char *filename, FILE *f, unsigned char *buf, size_t len)
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{
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memset(f, 0, sizeof *f);
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f->fd = sys_open(filename, O_RDONLY|O_CLOEXEC);
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if (f->fd < 0) return 0;
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f->flags = F_NOWR | F_PERM;
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f->buf = buf + UNGET;
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f->buf_size = len - UNGET;
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f->read = __stdio_read;
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f->seek = __stdio_seek;
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f->close = __stdio_close;
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f->lock = -1;
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return f;
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}
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