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https://github.com/fluencelabs/musl
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835f9f950e
this header evolved to facilitate the extremely lazy practice of omitting explicit includes of the necessary headers in individual stdio source files; not only was this sloppy, but it also increased build time. now, stdio_impl.h is only including the headers it needs for its own use; any further headers needed by source files are included directly where needed.
36 lines
536 B
C
36 lines
536 B
C
#include "stdio_impl.h"
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#include <limits.h>
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#include <errno.h>
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off_t __ftello_unlocked(FILE *f)
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{
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off_t pos = f->seek(f, 0, SEEK_CUR);
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if (pos < 0) return pos;
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/* Adjust for data in buffer. */
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return pos - (f->rend - f->rpos) + (f->wpos - f->wbase);
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}
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off_t __ftello(FILE *f)
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{
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off_t pos;
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FLOCK(f);
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pos = __ftello_unlocked(f);
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FUNLOCK(f);
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return pos;
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}
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long ftell(FILE *f)
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{
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off_t pos = __ftello(f);
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if (pos > LONG_MAX) {
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errno = EOVERFLOW;
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return -1;
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}
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return pos;
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}
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weak_alias(__ftello, ftello);
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LFS64(ftello);
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