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fix out of bounds write for zero length buffer in gethostname
[musl]
/
src
/
unistd
/
readlink.c
diff --git
a/src/unistd/readlink.c
b/src/unistd/readlink.c
index
ec291e3
..
a152d52
100644
(file)
--- a/
src/unistd/readlink.c
+++ b/
src/unistd/readlink.c
@@
-1,7
+1,12
@@
#include <unistd.h>
#include <unistd.h>
+#include <fcntl.h>
#include "syscall.h"
ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize)
{
#include "syscall.h"
ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize)
{
+#ifdef SYS_readlink
return syscall(SYS_readlink, path, buf, bufsize);
return syscall(SYS_readlink, path, buf, bufsize);
+#else
+ return syscall(SYS_readlinkat, AT_FDCWD, path, buf, bufsize);
+#endif
}
}