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mincore syscall wrapper
[oweals/musl.git]
/
src
/
stdio
/
fgetln.c
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#include "stdio_impl.h"
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char *fgetln(FILE *f, size_t *plen)
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{
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char *ret = 0, *z;
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ssize_t l;
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FLOCK(f);
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ungetc(getc_unlocked(f), f);
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if ((z=memchr(f->rpos, '\n', f->rend - f->rpos))) {
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ret = (char *)f->rpos;
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*plen = ++z - ret;
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f->rpos = (void *)z;
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} else if ((l = getline(&f->getln_buf, (size_t[]){0}, f)) > 0) {
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*plen = l;
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ret = f->getln_buf;
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}
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FUNLOCK(f);
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return ret;
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}