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-rw-r--r--guts/readlinkat.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/guts/readlinkat.c b/guts/readlinkat.c
new file mode 100644
index 0000000..13eeeb2
--- /dev/null
+++ b/guts/readlinkat.c
@@ -0,0 +1,25 @@
+/*
+ * static ssize_t
+ * wrap_readlinkat(int dirfd, const char *path, char *buf, size_t bufsiz) {
+ * ssize_t rc = -1;
+ */
+ rc = real_readlinkat(dirfd, path, buf, bufsiz);
+
+ if (rc > 0) {
+ /* strip out a leading chrooted part */
+ if (pseudo_chroot_len &&
+ !memcmp(buf, pseudo_chroot, pseudo_chroot_len)) {
+ if (buf[pseudo_chroot_len] == '/') {
+ memmove(buf, buf + pseudo_chroot_len, rc - pseudo_chroot_len);
+ rc -= pseudo_chroot_len;
+ } else if (buf[pseudo_chroot_len] == '\0') {
+ buf[0] = '/';
+ rc = 1;
+ }
+ /* otherwise, it's not really a match... */
+ }
+ }
+
+/* return rc;
+ * }
+ */