From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- src/unistd/readlink.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 src/unistd/readlink.c (limited to 'src/unistd/readlink.c') diff --git a/src/unistd/readlink.c b/src/unistd/readlink.c new file mode 100644 index 0000000..32f4537 --- /dev/null +++ b/src/unistd/readlink.c @@ -0,0 +1,19 @@ +#include +#include +#include "syscall.h" + +ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize) +{ + char dummy[1]; + if (!bufsize) { + buf = dummy; + bufsize = 1; + } +#ifdef SYS_readlink + int r = __syscall(SYS_readlink, path, buf, bufsize); +#else + int r = __syscall(SYS_readlinkat, AT_FDCWD, path, buf, bufsize); +#endif + if (buf == dummy && r > 0) r = 0; + return __syscall_ret(r); +} -- cgit v1.2.3