Brain bug.

[dus.git] / dus.c

diff --git a/dus.c b/dus.c
index 2947b5a..ac1a7d3 100644 (file)
--- a/dus.c
+++ b/dus.c
@@ -3,7 +3,7 @@
  *  dus is a simple utility to display the files and directories
  *  according to their total disk occupancy.
  *
- *  Copyright (c) 2010 Francois Fleuret
+ *  Copyright (c) 2010, 2011 Francois Fleuret
  *  Written by Francois Fleuret <francois@fleuret.org>
  *
  *  This file is part of dus.
@@ -22,9 +22,9 @@
  *
  */
 
-#define VERSION_NUMBER "1.2"
+#define VERSION_NUMBER "1.3"
 
-#define _BSD_SOURCE
+#define _DEFAULT_SOURCE
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -66,6 +66,10 @@ size_sum_t size_min = -1; /* -1 means no minimum size, otherwise lower
                               bound on the size to display a
                               file/dir */
 
+int dont_exit_on_protected_files = 0; /* Should we go on when we meet
+                                         files or directories which
+                                         are protected ? */
+
 /********************************************************************/
 
 /* malloc with error checking.  */
@@ -90,7 +94,7 @@ int ignore_entry(const char *name) {
     (ignore_dotfiles && name[0] == '.' && name[1] != '/');
 }
 
-size_sum_t entry_size(const char *name) {
+size_sum_t entry_size(const char *name, int *isdir) {
   DIR *dir;
   struct dirent *dir_e;
   struct stat dummy;
@@ -98,12 +102,17 @@ size_sum_t entry_size(const char *name) {
   char subname[PATH_MAX];
 
   result = 0;
+  if(isdir) { *isdir = 0; }
 
   if(lstat(name, &dummy) != 0) {
     fprintf(stderr,
             "dus: Can not stat %s: %s\n",
             name, strerror(errno));
-    exit(EXIT_FAILURE);
+    if(!(errno == EACCES && dont_exit_on_protected_files)) {
+      exit(EXIT_FAILURE);
+    } else {
+      return 0;
+    }
   }
 
   if(S_ISLNK(dummy.st_mode)) {
@@ -111,12 +120,13 @@ size_sum_t entry_size(const char *name) {
   }
 
   if(S_ISDIR(dummy.st_mode)) {
+    if(isdir) { *isdir = 1; }
     dir = opendir(name);
     if(dir) {
       while((dir_e = readdir(dir))) {
         if(!ignore_entry(dir_e->d_name)) {
           snprintf(subname, PATH_MAX, "%s/%s", name, dir_e->d_name);
-          result += entry_size(subname);
+          result += entry_size(subname, 0);
         }
       }
       closedir(dir);
@@ -124,7 +134,9 @@ size_sum_t entry_size(const char *name) {
       fprintf(stderr,
               "dus: Can not open directory %s: %s\n",
               name, strerror(errno));
-      exit(EXIT_FAILURE);
+      if(!(errno == EACCES && dont_exit_on_protected_files)) {
+        exit(EXIT_FAILURE);
+      }
     }
   } else if(S_ISREG(dummy.st_mode)) {
     result += dummy.st_size;
@@ -176,10 +188,17 @@ struct entry_node {
 };
 
 struct entry_node *push_entry(char *name, struct entry_node *head) {
+  char tmp_name[PATH_MAX];
   struct entry_node *result;
+  int isdir;
   result = safe_malloc(sizeof(struct entry_node));
-  result->name = strdup(name);
-  result->size = entry_size(name);
+  result->size = entry_size(name, &isdir);
+  if(isdir) {
+    snprintf(tmp_name, PATH_MAX, "%s/", name);
+    result->name = strdup(tmp_name);
+  } else {
+    result->name = strdup(name);
+  }
   result->next = head;
   return result;
 }
@@ -276,25 +295,25 @@ void fancy_print(char *buffer, size_t buffer_size,
   if(size < 1024) {
     snprintf(buffer,
              buffer_size,
-             "% 8d -- %s\n",
+             "% 8d %s\n",
              ((int) size),
              filename);
   } else if(size < 1024 * 1024) {
     snprintf(buffer,
              buffer_size,
-             "% 7.1fK -- %s\n",
+             "% 7.1fK %s\n",
              ((double) (size))/(1024.0),
              filename);
   } else if(size < 1024 * 1024 * 1024) {
     snprintf(buffer,
              buffer_size,
-             "% 7.1fM -- %s\n",
+             "% 7.1fM %s\n",
              ((double) (size))/(1024.0 * 1024),
              filename);
   } else {
     snprintf(buffer,
              buffer_size,
-             "% 7.1fG -- %s\n",
+             "% 7.1fG %s\n",
              ((double) (size))/(1024.0 * 1024.0 * 1024.0),
              filename);
   }
@@ -364,7 +383,7 @@ void print_sorted(struct entry_node *root, int width, int height) {
       line[width] = '\n';
       line[width + 1] = '\0';
     }
-    printf(line);
+    printf("%s", line);
   }
 
   if(height >= 0 && nb_nodes > height && show_top && !forced_height) {
@@ -385,6 +404,8 @@ void usage(FILE *out) {
   fprintf(out, "   -h, --help                 show this help.\n");
   fprintf(out, "   -v, --version              prints the version number and exit\n");
   fprintf(out, "   -d, --ignore-dots          ignore files and directories starting with a '.'\n");
+  fprintf(out, "   -i, --ignore-protected     do not exit when visiting files and directories\n");
+  fprintf(out, "                              for which we do not have permission\n");
   fprintf(out, "   -f, --fancy                display size with float values and K, M and G\n");
   fprintf(out, "                              units.\n");
   fprintf(out, "   -r, --reverse-order        reverse the sorting order.\n");
@@ -408,6 +429,7 @@ void usage(FILE *out) {
 static struct option long_options[] = {
   { "version", no_argument, 0, 'v' },
   { "ignore-dots", no_argument, 0, 'd' },
+  { "ignore-protected", no_argument, 0, 'i' },
   { "reverse-order", no_argument, 0, 'r' },
   { "show-top", no_argument, 0, 't' },
   { "help", no_argument, 0, 'h' },
@@ -427,7 +449,7 @@ int main(int argc, char **argv) {
 
   setlocale (LC_ALL, "");
 
-  while ((c = getopt_long(argc, argv, "vdfrtl:c:m:hd",
+  while ((c = getopt_long(argc, argv, "ivdfrtl:c:m:hd",
                           long_options, NULL)) != -1) {
     switch (c) {
 
@@ -440,6 +462,10 @@ int main(int argc, char **argv) {
       ignore_dotfiles = 1;
       break;
 
+    case 'i':
+      dont_exit_on_protected_files = 1;
+      break;
+
     case 'f':
       fancy_size_display = 1;
       break;