20 lines
425 B
C
20 lines
425 B
C
#include <unistd.h>
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#include <fcntl.h>
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#include "syscall.h"
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ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize)
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{
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char dummy[1];
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if (!bufsize) {
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buf = dummy;
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bufsize = 1;
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}
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#ifdef SYS_readlink
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int r = __syscall(SYS_readlink, path, buf, bufsize);
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#else
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int r = __syscall(SYS_readlinkat, AT_FDCWD, path, buf, bufsize);
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#endif
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if (buf == dummy && r > 0) r = 0;
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return __syscall_ret(r);
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}
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