@@ -1,3 +1,12 @@

[chiark-utils.git] / cprogs / summer.c

diff --git a/cprogs/summer.c b/cprogs/summer.c
index ada0f14830d35586401d803a442e3f56478aecec..5e85111218c6a35567604c31edf2739c3d91adea 100644 (file)
--- a/cprogs/summer.c
+++ b/cprogs/summer.c
@@ -27,10 +27,12 @@
 #define CSUMXL 32
 
 static int quiet=0, hidectime=0, hideatime=0;
-static int hidedirsize=0, hidelinkmtime=0;
+static int hidedirsize=0, hidelinkmtime=0, onefilesystem=0;
 static int filenamefieldsep=' ';
 static FILE *errfile;
 
+#define nodeflag_fsvalid       1u
+
 static void malloc_fail(void) { perror("summer: alloc failed"); exit(12); }
 
 static void *mmalloc(size_t sz) {
@@ -156,14 +158,14 @@ static int hardlink_compar(const void *av, const void *bv) {
   return b->dev - a->dev;
 }
 
-static void recurse(const char *path);
+static void recurse(const char *path, unsigned nodeflags, dev_t fs);
 
-static void node(const char *path) {
+static void node(const char *path, unsigned nodeflags, dev_t fs) {
   char linktarg[MAXFN+1];
   struct hardlink *foundhl;
   const struct stat *stab;
   struct stat stabuf;
-  int r;
+  int r, mountpoint=0;
 
   r= lstat(path, &stabuf);
   stab= r ? 0 : &stabuf;
@@ -185,15 +187,22 @@ static void node(const char *path) {
     }
   }
 
+  if (stab) {
+    if ((nodeflags & nodeflag_fsvalid) && stab->st_dev != fs)
+      mountpoint= 1;
+    fs= stab->st_dev;
+    nodeflags |= nodeflag_fsvalid;
+  }
+
   if (!stab) problem_e(path,CSUMXL,"inaccessible");
   else if (foundhl) csum_str("hardlink");
   else if (S_ISREG(stab->st_mode)) csum_file(path);
-  else if (S_ISDIR(stab->st_mode)) csum_str("dir");
   else if (S_ISCHR(stab->st_mode)) csum_dev('c',stab);
   else if (S_ISBLK(stab->st_mode)) csum_dev('b',stab);
   else if (S_ISFIFO(stab->st_mode)) csum_str("pipe");
   else if (S_ISLNK(stab->st_mode)) csum_str("symlink");
   else if (S_ISSOCK(stab->st_mode)) csum_str("sock");
+  else if (S_ISDIR(stab->st_mode)) csum_str(mountpoint ? "mountpoint" : "dir");
   else problem(path,CSUMXL,"badobj: 0x%lx", (unsigned long)stab->st_mode);
 
   if (stab && S_ISLNK(stab->st_mode)) {
@@ -256,14 +265,14 @@ static void node(const char *path) {
 
   if (ferror(stdout)) { perror("summer: stdout"); exit(12); }
 
-  if (stab && S_ISDIR(stab->st_mode))
-    recurse(path);
+  if (stab && S_ISDIR(stab->st_mode) && !(mountpoint && onefilesystem))
+    recurse(path, nodeflags, fs);
 }
 
 static void process(const char *startpoint) {
   if (!quiet)
     fprintf(stderr,"summer: processing: %s\n",startpoint);
-  node(startpoint);
+  node(startpoint, 0,0);
   tdestroy(hardlinks,free);
   hardlinks= 0;
 }
@@ -287,7 +296,7 @@ static int recurse_compar(const void *av, const void *bv) {
   return strcmp((*a)->d_name, (*b)->d_name);
 }
 
-static void recurse(const char *path_or_buf) {
+static void recurse(const char *path_or_buf, unsigned nodeflags, dev_t fs) {
   static char *buf;
   static int buf_allocd;
   
@@ -312,13 +321,14 @@ static void recurse(const char *path_or_buf) {
   buf[pathl]= '/';
   pathl++;
   if (nentries < 0) {
-    strcpy(buf+pathl,"\\?");  errno= esave;
-    problem_e(buf,-1,"scandir failed");
+    buf[pathl]= 0;  errno= esave;
+    problem_e(buf,CSUMXL+72,"scandir failed");
+    fn_escaped(stdout,buf);  putchar('\n');
     return;
   }
   for (i=0, de=namelist; i<nentries; i++, de++) {
     strcpy(buf+pathl, (*de)->d_name);
-    node(buf);
+    node(buf, nodeflags, fs);
     free(*de);
   }
   free(namelist);
@@ -369,6 +379,9 @@ int main(int argc, const char *const *argv) {
       case 'b':
        hidelinkmtime= 1;
        break;
+      case 'x':
+       onefilesystem= 1;
+       break;
       case 'C':
        hidectime= 1;
        break;