Moving things between two folders on the same volume but different group ownership...

[netatalk.git] / etc / afpd / unix.c

diff --git a/etc/afpd/unix.c b/etc/afpd/unix.c
index cf4b10e26761c6bfbb7889dfd4b32d1be75e5cd9..c8bb933aa7305a015987492bdb136bc7645d6aeb 100644 (file)
--- a/etc/afpd/unix.c
+++ b/etc/afpd/unix.c
@@ -1,5 +1,5 @@
 /*
- * $Id: unix.c,v 1.39 2002-12-14 04:01:01 didg Exp $
+ * $Id: unix.c,v 1.40 2003-01-07 15:55:22 rlewczuk Exp $
  *
  * Copyright (c) 1990,1993 Regents of The University of Michigan.
  * All Rights Reserved.  See COPYRIGHT.
@@ -639,3 +639,89 @@ setdirowner_noadouble:
 
     return( 0 );
 }
+
+/* recursive chown()ing of a directory */
+static int recursive_chown(const char *path, uid_t uid, gid_t gid) {
+    struct stat sbuf;
+    DIR *odir = NULL;
+    struct dirent *entry;
+    char *name;
+    int ret = 0;
+    char newpath[PATH_MAX+1];
+    newpath[PATH_MAX] = '\0';
+    
+    if (chown(path, uid, gid) < 0) {
+        LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s\n", path, uid, strerror(errno));
+       return -1;
+    }
+
+    if (stat(path, &sbuf) < 0) {
+       LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s\n", path, uid, strerror(errno));
+       return -1;
+    }
+       
+    if (S_ISDIR(sbuf.st_mode)) {
+       odir = opendir(path);
+       if (odir == NULL) {
+           LOG(log_error, logtype_afpd, "cannot opendir() [%s] (uid = %d): %s\n", path, uid, strerror(errno));
+           goto recursive_chown_end;
+       }
+       while ((entry=readdir(odir)) != NULL) {
+           name = entry->d_name;
+           if (name[0] == '.' && name[1] == '\0')
+               continue;
+           if (name[0] == '.' && name[1] == '.' && name[2] == '\0')
+               continue;
+           sprintf(newpath, "%s/%s", path, name);
+           if (recursive_chown(newpath, uid, gid) < 0)
+               ret = -1;
+       } /* while */
+    } /* if */
+
+recursive_chown_end:
+    if (odir != NULL) {
+       closedir(odir);
+    }
+    return ret;
+}
+
+/* This is equivalent of unix rename(). */
+int unix_rename(const char *oldpath, const char *newpath)
+{
+       char pd_name[PATH_MAX+1];
+       int i;
+        struct stat pd_stat;
+        uid_t uid;
+
+       if (rename(oldpath, newpath) < 0)
+               return -1;
+
+       for (i = 0; i <= PATH_MAX && newpath[i] != '\0'; i++)
+               pd_name[i] = newpath[i];
+       pd_name[i] = '\0';
+
+       while (i > 0 && pd_name[i] != '/') i--;
+       if (pd_name[i] == '/') i++;
+
+        pd_name[i++] = '.'; pd_name[i++] = '\0';
+
+        if (stat(pd_name, &pd_stat) < 0) {
+           LOG(log_error, logtype_afpd, "stat() of parent dir failed: pd_name = %s, uid = %d: %s\n",
+               pd_name, geteuid(), strerror(errno));
+               return 0;
+       }
+
+       /* So we have SGID bit set... */
+        if ((S_ISGID & pd_stat.st_mode)        != 0) {
+            uid = geteuid();
+            if (seteuid(0) < 0)
+               LOG(log_error, logtype_afpd, "seteuid() failed: %s\n", strerror(errno));
+            if (recursive_chown(newpath, uid, pd_stat.st_gid) < 0)
+               LOG(log_error, logtype_afpd, "chown() of parent dir failed: newpath=%s, uid=%d: %s\n",
+                   pd_name, geteuid(), strerror(errno));
+            seteuid(uid);
+       }
+
+       return 0;
+}
+