diff options
author | Jim Meyering <jim@meyering.net> | 2002-04-27 06:33:08 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 2002-04-27 06:33:08 +0000 |
commit | a6050a72917ca39ded1e6075675d18585c469228 (patch) | |
tree | 48d8d11c98dc894ea81d5b8fbd3fb60a70db5aed /src | |
parent | d1cf3257391de5edfb294a0d13c255cc222af3b3 (diff) | |
download | coreutils-a6050a72917ca39ded1e6075675d18585c469228.tar.xz |
(cycle_check): New function containing code factored
out of remove_dir. The sole difference is that upon detecting a
cycle, rm now dies unconditionally. Before, in interactive mode,
it would ask the user whether to continue.
(remove_dir): Call cycle_check.
Diffstat (limited to 'src')
-rw-r--r-- | src/remove.c | 83 |
1 files changed, 39 insertions, 44 deletions
diff --git a/src/remove.c b/src/remove.c index d18342bbb..ab1a3e876 100644 --- a/src/remove.c +++ b/src/remove.c @@ -99,12 +99,6 @@ static struct obstack dir_stack; element pushed onto the dir stack may contain slashes. */ static struct obstack len_stack; -static inline bool -is_power_of_two (unsigned int i) -{ - return (i & (i - 1)) == 0; -} - static inline unsigned int current_depth (void) { @@ -577,6 +571,44 @@ remove_file (struct File_spec *fs, const struct rm_options *x) return RM_OK; } +static inline bool +is_power_of_two (unsigned int i) +{ + return (i & (i - 1)) == 0; +} + +static void +cycle_check (struct stat const *sb) +{ +#ifdef ENABLE_CYCLE_CHECK + /* If there is a directory cycle, detect it (lazily) and die. */ + static struct dev_ino dir_cycle_detect_dev_ino; + static unsigned int chdir_counter; + + /* If the current directory ever happens to be the same + as the one we last recorded for the cycle detection, + then it's obviously part of a cycle. */ + if (chdir_counter && SAME_INODE (*sb, dir_cycle_detect_dev_ino)) + { + error (0, 0, _("\ +WARNING: Circular directory structure.\n\ +This almost certainly means that you have a corrupted file system.\n\ +NOTIFY YOUR SYSTEM MANAGER.\n\ +The following directory is part of the cycle:\n %s\n"), + quote (full_filename ("."))); + exit (EXIT_FAILURE); + } + + /* If the number of `descending' chdir calls is a power of two, + record the dev/ino of the current directory. */ + if (is_power_of_two (++chdir_counter)) + { + dir_cycle_detect_dev_ino.st_dev = sb->st_dev; + dir_cycle_detect_dev_ino.st_ino = sb->st_ino; + } +#endif +} + /* If not in recursive mode, print an error message and return RM_ERROR. Otherwise, query the user if appropriate, then try to recursively remove the directory specified by FS. Return RM_OK if it is removed, @@ -654,44 +686,7 @@ remove_dir (struct File_spec *fs, int need_save_cwd, quote (full_filename (dir_name))); } -#ifdef ENABLE_CYCLE_CHECK - { - /* If there is a directory cycle, detect it (lazily) and inform the user. - In interactive mode, the user gets to choose whether to continue - removing any additional command line arguments. */ - static struct dev_ino dir_cycle_detect_dev_ino; - static unsigned int chdir_counter; - - /* If the current directory ever happens to be the same - as the one we last recorded for the cycle detection, - then it's obviously part of a cycle. */ - if (chdir_counter && SAME_INODE (sb, dir_cycle_detect_dev_ino)) - { - error (0, 0, _("\ -WARNING: Circular directory structure.\n\ -This almost certainly means that you have a corrupted file system.\n\ -NOTIFY YOUR SYSTEM MANAGER.\n\ -The following directory is part of the cycle:\n %s\n"), - quote (full_filename (dir_name))); - - if (x->interactive) - { - error (0, 0, _("continue? ")); - if (yesno ()) - return RM_ERROR; - } - exit (EXIT_FAILURE); - } - - /* If the number of `descending' chdir calls is a power of two, - record the dev/ino of the current directory. */ - if (is_power_of_two (++chdir_counter)) - { - dir_cycle_detect_dev_ino.st_dev = sb.st_dev; - dir_cycle_detect_dev_ino.st_ino = sb.st_ino; - } - } -#endif + cycle_check (&sb); tmp_cwd_dev_ino.st_dev = sb.st_dev; tmp_cwd_dev_ino.st_ino = sb.st_ino; |