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/**************************************************************/
/* tpax: a topological pax implementation */
/* Copyright (C) 2020--2021 SysDeer Technologies, LLC */
/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
/**************************************************************/
#ifndef TPAX_READLINK_IMPL_H
#define TPAX_READLINK_IMPL_H
#include <unistd.h>
#include <errno.h>
static inline int tpax_readlinkat(
int fdat,
const char * restrict path,
char * restrict buf,
ssize_t bufsize)
{
ssize_t ret;
if ((ret = readlinkat(fdat,path,buf,bufsize)) <= 0) {
return -1;
} else if (ret == bufsize) {
errno = ENOBUFS;
return -1;
} else {
buf[ret] = 0;
return 0;
}
}
#endif
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