fs-util: add new CHASE_WARN flag to chase_symlinks()

This flag can be used to make chase_symlinks() emit a warning when it encounters an error. Such flag can be useful for generating a comprehensive and detailed warning since chase_symlinks() can generate a warning with a full context. For now only warnings for unsafe transitions are produced.
2018-11-30 13:30:26 +01:00
parent 0abf94923b
commit fd74c6f3f8
2 changed files with 19 additions and 3 deletions
@@ -74,6 +74,7 @@ enum {
        CHASE_TRAIL_SLASH = 1 << 5, /* If set, any trailing slash will be preserved */
        CHASE_STEP        = 1 << 6, /* If set, just execute a single step of the normalization */
        CHASE_NOFOLLOW    = 1 << 7, /* Only valid with CHASE_OPEN: when the path's right-most component refers to symlink return O_PATH fd of the symlink, rather than following it. */
+        CHASE_WARN        = 1 << 8, /* Emit an appropriate warning when an error is encountered */
 };

 /* How many iterations to execute before returning -ELOOP */