#include <stdio.h>
-#include "openat-priv.h"
+#if HAVE_RENAMEAT
+
+# include <errno.h>
+# include <stdbool.h>
+# include <stdlib.h>
+# include <string.h>
+# include <sys/stat.h>
+
+# include "dirname.h"
+# include "openat.h"
+
+# undef renameat
+
+/* renameat does not honor trailing / on Solaris 10. Solve it in a
+ similar manner to rename. No need to worry about bugs not present
+ on Solaris, since all other systems either lack renameat or honor
+ trailing slash correctly. */
+
+int
+rpl_renameat (int fd1, char const *src, int fd2, char const *dst)
+{
+ size_t src_len = strlen (src);
+ size_t dst_len = strlen (dst);
+ char *src_temp = (char *) src;
+ char *dst_temp = (char *) dst;
+ bool src_slash;
+ bool dst_slash;
+ int ret_val = -1;
+ int rename_errno = ENOTDIR;
+ struct stat src_st;
+ struct stat dst_st;
+
+ /* Let strace see any ENOENT failure. */
+ if (!src_len || !dst_len)
+ return renameat (fd1, src, fd2, dst);
+
+ src_slash = src[src_len - 1] == '/';
+ dst_slash = dst[dst_len - 1] == '/';
+ if (!src_slash && !dst_slash)
+ return renameat (fd1, src, fd2, dst);
+
+ /* Presence of a trailing slash requires directory semantics. If
+ the source does not exist, or if the destination cannot be turned
+ into a directory, give up now. Otherwise, strip trailing slashes
+ before calling rename. */
+ if (lstatat (fd1, src, &src_st))
+ return -1;
+ if (lstatat (fd2, dst, &dst_st))
+ {
+ if (errno != ENOENT || !S_ISDIR (src_st.st_mode))
+ return -1;
+ }
+ else if (!S_ISDIR (dst_st.st_mode))
+ {
+ errno = ENOTDIR;
+ return -1;
+ }
+ else if (!S_ISDIR (src_st.st_mode))
+ {
+ errno = EISDIR;
+ return -1;
+ }
+
+# if RENAME_TRAILING_SLASH_SOURCE_BUG
+ /* See the lengthy comment in rename.c why Solaris 9 is forced to
+ GNU behavior, while Solaris 10 is left with POSIX behavior,
+ regarding symlinks with trailing slash. */
+ if (src_slash)
+ {
+ src_temp = strdup (src);
+ if (!src_temp)
+ {
+ /* Rather than rely on strdup-posix, we set errno ourselves. */
+ rename_errno = ENOMEM;
+ goto out;
+ }
+ strip_trailing_slashes (src_temp);
+ if (lstatat (fd1, src_temp, &src_st))
+ {
+ rename_errno = errno;
+ goto out;
+ }
+ if (S_ISLNK (src_st.st_mode))
+ goto out;
+ }
+ if (dst_slash)
+ {
+ dst_temp = strdup (dst);
+ if (!dst_temp)
+ {
+ rename_errno = ENOMEM;
+ goto out;
+ }
+ strip_trailing_slashes (dst_temp);
+ if (lstatat (fd2, dst_temp, &dst_st))
+ {
+ if (errno != ENOENT)
+ {
+ rename_errno = errno;
+ goto out;
+ }
+ }
+ else if (S_ISLNK (dst_st.st_mode))
+ goto out;
+ }
+# endif /* RENAME_TRAILING_SLASH_SOURCE_BUG */
+
+ ret_val = renameat (fd1, src_temp, fd2, dst_temp);
+ rename_errno = errno;
+ out:
+ if (src_temp != src)
+ free (src_temp);
+ if (dst_temp != dst)
+ free (dst_temp);
+ errno = rename_errno;
+ return ret_val;
+}
+
+#else /* !HAVE_RENAMEAT */
+
+# include "openat-priv.h"
/* Rename FILE1, in the directory open on descriptor FD1, to FILE2, in
the directory open on descriptor FD2. If possible, do it without
{
return at_func2 (fd1, file1, fd2, file2, rename);
}
+
+#endif /* !HAVE_RENAMEAT */
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