emo/busybox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

recursive_action: add depth param

Browse Source 
chmod: match coreutils versus following links
This commit is contained in:
Denis Vlasenko
2006-10-27 23:42:25 +00:00
parent e80e2a3660
commit 8c35d65c43
9 changed files with 125 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
libbb/recursive_action.c
View File

@@ -11,7 +11,6 @@
#undef DEBUG_RECURS_ACTION
/*
* Walk down all the directories under the specified
* location, and do something (something specified
@@ -23,16 +22,23 @@
* is so stinking huge.
*/
static int true_action(const char *fileName, struct stat *statbuf, void* userData)
static int true_action(const char *fileName, struct stat *statbuf, void* userData, int depth)
{
return TRUE;
}
/*
* followLinks=0/1 differs mainly in handling of links to dirs.
* 0: lstat(statbuf). Calls fileAction on link name even if points to dir.
* 1: stat(statbuf). Calls dirAction and optionally recurse on link to dir.
*/
int recursive_action(const char *fileName,
int recurse, int followLinks, int depthFirst,
int (*fileAction) (const char *fileName, struct stat * statbuf, void* userData),
int (*dirAction) (const char *fileName, struct stat * statbuf, void* userData),
void* userData)
int (*fileAction)(const char *fileName, struct stat *statbuf, void* userData, int depth),
int (*dirAction)(const char *fileName, struct stat *statbuf, void* userData, int depth),
void* userData,
int depth)
{
struct stat statbuf;
int status;
@@ -53,21 +59,23 @@ int recursive_action(const char *fileName,
return FALSE;
}
if (!followLinks && (S_ISLNK(statbuf.st_mode))) {
return fileAction(fileName, &statbuf, userData);
/* If S_ISLNK(m), then we know that !S_ISDIR(m).
* Then we can skip checking first part: if it is true, then
* (!dir) is also true! */
if ( /* (!followLinks && S_ISLNK(statbuf.st_mode)) || */
!S_ISDIR(statbuf.st_mode)
) {
return fileAction(fileName, &statbuf, userData, depth);
}
/* It's a directory (or a link to one, and followLinks is set) */
if (!recurse) {
if (S_ISDIR(statbuf.st_mode)) {
return dirAction(fileName, &statbuf, userData);
}
return dirAction(fileName, &statbuf, userData, depth);
}
if (!S_ISDIR(statbuf.st_mode))
return fileAction(fileName, &statbuf, userData);
if (!depthFirst) {
status = dirAction(fileName, &statbuf, userData);
status = dirAction(fileName, &statbuf, userData, depth);
if (!status) {
bb_perror_msg("%s", fileName);
return FALSE;
@@ -88,14 +96,14 @@ int recursive_action(const char *fileName,
if (nextFile == NULL)
continue;
if (!recursive_action(nextFile, TRUE, followLinks, depthFirst,
fileAction, dirAction, userData)) {
fileAction, dirAction, userData, depth+1)) {
status = FALSE;
}
free(nextFile);
}
closedir(dir);
if (depthFirst) {
if (!dirAction(fileName, &statbuf, userData)) {
if (!dirAction(fileName, &statbuf, userData, depth)) {
bb_perror_msg("%s", fileName);
return FALSE;
}