bookmarkctl: better handling of command-line args

doc/bookmarkctl.1

@@ -9,14 +9,13 @@ bookmarkctl - manage a mounted BookmarkFS filesystem
 .RI [ args ]
 .PP
 .B "bookmarkctl permd"
-.I pathname
+.RI [ options ]
-.I op
 .I name1
 .I name2
+.I pathname
 .PP
 .B "bookmarkctl fsck"
 .I pathname
-.I op
 .PP
 .B "bookmarkctl help"
 .PP
@@ -30,7 +29,8 @@ filesystem.
 .SS Permute directory entries
 The
 .B permd
-sub-command re-arranges the order of the directory entries returned from
+sub-command re-arranges the order of the directory entries to be returned
+from future
 .BR readdir (3)
 calls.
 .PP
@@ -42,41 +42,38 @@ The
 and
 .I name2
 arguments are filenames under that directory.
-.PP
+.SS Filesystem check
 The
-.I op
+.B fsck
-argument is the operation to perform on the directory:
+sub-command displays a list of filesystem errors found under the directory
+referred to by
+.IR pathname .
+It does not recurse into subdirectories.
+.PP
+For the full fsck functionalities, use
+.BR fsck.bookmarkfs (1).
+.
+.SH OPTIONS
+.SS Permute directory entries
 .TP
-.B swap
+.B \-s
 Exchange the positions of the directory entries represented by
 .I name1
 and
 .IR name2 .
 .TP
-.BR move\-before | move\-after
+.BR \-b ", " \-a
 Move the directory entry represented by
 .I name1
 to the position just before/after the one represented by
 .IR name2 .
-.SS Filesystem check
-The
-.B fsck
-sub-command checks for errors within a BookmarkFS filesystem.
 .PP
 The
-.I pathname
+.BR \-s ", " \-b
-argument is the path to the directory to perform checks on.
+and
-.PP
+.B \-a
-The
+options are mutually exclusive.
-.I op
+If multiple options are provided, the last one takes effect.
-argument is the operation to perform on the directory:
-.TP
-.B list
-Display a list of errors found under the given directory.
-Will not recurse into subdirectories.
-.PP
-For the full fsck functionalities, use
-.BR fsck.bookmarkfs (1).
 .
 .SH EXIT STATUS
 .TP

doc/bookmarkfs.texi

@@ -547,59 +547,55 @@ Sub-commands:
 
 @table @command
 @item permd
-Rearranges the order of the directory entries obtained from @code{readdir()}.
+Rearranges the order of the directory entries to be returned from
+future calls to @code{readdir()}.
 @xref{Permute Directory Entries}.
 
 @example
-bookmarkctl permd @var{pathname} @var{op} @var{name1} @var{name2}
+bookmarkctl permd [@var{options}] @var{name1} @var{name2} @var{pathname}
 @end example
 
 @table @var
-@item pathname
-Path to the directory.
-
 @item name1
 @item name2
 Filename of entries under the directory.
 
-@item op
+@item pathname
-Operation to perform on the directory:
+Path to the parent directory.
+@end table
 
-@table @samp
+Options:
-@item swap
+
+@table @option
+@item -s
 Exchange the positions of the directory entries represented by @var{name1}
 and @var{name2}.
 
-@item move-before
+@item -b
 Move the directory entry represented by @var{name1} to the position just
 @emph{before} the one represented by @var{name2}.
 
-@item move-after
+@item -a
 Move the directory entry represented by @var{name1} to the position just
 @emph{after} the one represented by @var{name2}.
 @end table
-@end table
+
+The @option{-s}, @option{-b} and @option{-a} options are mutually exclusive.
+If multiple options are provided, the last one takes effect.
 
 @item fsck
-Check for errors within a BookmarkFS filesystem.
+Displays a list of filesystem errors found under the given directory.
 @xref{Filesystem Check}.
 
+Does not recurse into subdirectories.
+
 @example
-bookmarkctl fsck @var{pathname} @var{op}
+bookmarkctl fsck @var{pathname}
 @end example
 
 @table @var
 @item pathname
 Path to the directory to perform checks on.
-
-@item op
-Operation to perform on the directory:
-
-@table @samp
-@item list
-Display a list of errors found under the given directory.
-Will not recurse into subdirectories.
-@end table
 @end table
 
 For the full fsck functionalities, @pxref{fsck.bookmarkfs}.

src/bookmarkctl.c

@@ -32,6 +32,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 
+#include "frontend_util.h"
 #include "fsck_util.h"
 #include "ioctl.h"
 #include "macros.h"
@@ -104,21 +105,15 @@ subcmd_fsck (
     int   argc,
     char *argv[]
 ) {
-#define FSCK_NARGS  2
+    if (--argc != 1) {
-    if (--argc != FSCK_NARGS) {
+        if (argc == 0) {
-        log_printf("fsck: " STRINGIFY(FSCK_NARGS) " args expected, %d given",
+            log_puts("fsck: pathname must be specified");
-                argc);
+        } else {
-        return -1;
+            log_puts("fsck: too many arguments");
-    }
+        }
-    char const *path  = *(++argv);
-    char const *opstr = *(++argv);
-
-    if (0 == strcmp("list", opstr)) {
-        // NOOP
-    } else {
-        log_printf("fsck: bad operation name '%s'", opstr);
         return -1;
     }
+    char const *path = *(++argv);
 
     int dirfd = open(path, O_RDONLY | O_DIRECTORY);
     if (dirfd < 0) {
@@ -138,8 +133,10 @@ subcmd_fsck (
             break;
         }
     } while (status != BOOKMARKFS_FSCK_RESULT_END);
+
     close(dirfd);
     return status;
+
 }
 
 static int
@@ -147,29 +144,41 @@ subcmd_permd (
     int   argc,
     char *argv[]
 ) {
-#define PERMD_NARGS  4
+    int op = -1;
-    if (--argc != PERMD_NARGS) {
+
-        log_printf("permd: " STRINGIFY(PERMD_NARGS) " args expected, %d given",
+    OPT_START(argc, argv, "sba")
-                argc);
+    OPT_OPT('s') {
+        op = BOOKMARKFS_PERMD_OP_SWAP;
+        break;
+    }
+    OPT_OPT('b') {
+        op = BOOKMARKFS_PERMD_OP_MOVE_BEFORE;
+        break;
+    }
+    OPT_OPT('a') {
+        op = BOOKMARKFS_PERMD_OP_MOVE_AFTER;
+        break;
+    }
+    OPT_END
+
+    if (op < 0) {
+        log_puts("permd: no operation specified");
         return -1;
     }
-    char const *path  = *(++argv);
-    char const *opstr = *(++argv);
-    char const *name1 = *(++argv);
-    char const *name2 = *(++argv);
-
     struct bookmarkfs_permd_data permd_data;
+    permd_data.op = op;
 
-    if (0 == strcmp("swap", opstr)) {
+    if (argc != 3) {
-        permd_data.op = BOOKMARKFS_PERMD_OP_SWAP;
+        if (argc < 3) {
-    } else if (0 == strcmp("move-before", opstr)) {
+            log_puts("permd: dentry names and dir path must be specified");
-        permd_data.op = BOOKMARKFS_PERMD_OP_MOVE_BEFORE;
+        } else {
-    } else if (0 == strcmp("move-after", opstr)) {
+            log_puts("permd: too many arguments");
-        permd_data.op = BOOKMARKFS_PERMD_OP_MOVE_AFTER;
+        }
-    } else {
-        log_printf("permd: bad operation name '%s'", opstr);
         return -1;
     }
+    char const *name1 = argv[0];
+    char const *name2 = argv[1];
+    char const *path  = argv[2];
 
 #define COPY_NAME(dst, src)                                        \
     if ((dst) + sizeof(dst) == stpncpy(dst, src, sizeof(dst))) {   \