diff options
Diffstat (limited to 'src/copy.c')
| -rw-r--r-- | src/copy.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/copy.c b/src/copy.c index f4e3b174b..b46221c01 100644 --- a/src/copy.c +++ b/src/copy.c @@ -352,8 +352,24 @@ copy_reg (char const *src_name, char const *dst_name, } if (*new_dst) - dest_desc = open (dst_name, O_WRONLY | O_CREAT | O_EXCL | O_BINARY, - dst_mode & ~omitted_permissions); + { + int open_flags = O_WRONLY | O_CREAT | O_BINARY; + dest_desc = open (dst_name, open_flags | O_EXCL, + dst_mode & ~omitted_permissions); + + /* When trying to copy through a dangling destination symlink, + the above open fails with EEXIST. If that happens, and + lstat'ing the DST_NAME shows that it is a symlink, repeat + the open call, but this time without O_EXCL. */ + if (dest_desc < 0 && errno == EEXIST) + { + struct stat dangling_link_sb; + if (lstat (dst_name, &dangling_link_sb) == 0 + && S_ISLNK (dangling_link_sb.st_mode)) + dest_desc = open (dst_name, open_flags, + dst_mode & ~omitted_permissions); + } + } else omitted_permissions = 0; |