forked from DGNum/liminix
add mtdutils mkfs.jffs2 --graft option
we'd like a bit more of the convenience of mksquashfs (never thought I'd say _that_) for jffs2, in particular not having to copy all the desired store paths into a single directory just so we can create an image from them
This commit is contained in:
Daniel Barlow
parent
e0bd64b80f
commit
98243d43da
2 changed files with 153 additions and 0 deletions
|
|
@ -14,6 +14,12 @@ let
|
||||||
});
|
});
|
||||||
in
|
in
|
||||||
extraPkgs // {
|
extraPkgs // {
|
||||||
|
mtdutils = prev.mtdutils.overrideAttrs(o: {
|
||||||
|
patches = (if o ? patches then o.patches else []) ++ [
|
||||||
|
./pkgs/mtdutils/0001-mkfs.jffs2-add-graft-option.patch
|
||||||
|
];
|
||||||
|
});
|
||||||
|
|
||||||
strace = prev.strace.override { libunwind = null; };
|
strace = prev.strace.override { libunwind = null; };
|
||||||
|
|
||||||
kexec-tools-static = prev.kexec-tools.overrideAttrs(o: {
|
kexec-tools-static = prev.kexec-tools.overrideAttrs(o: {
|
||||||
|
|
|
||||||
147
pkgs/mtdutils/0001-mkfs.jffs2-add-graft-option.patch
Normal file
147
pkgs/mtdutils/0001-mkfs.jffs2-add-graft-option.patch
Normal file
|
|
@ -0,0 +1,147 @@
|
||||||
|
From e01c82f9f405dd24d333ffd1aadd772835706e26 Mon Sep 17 00:00:00 2001
|
||||||
|
From: Daniel Barlow <dan@telent.net>
|
||||||
|
Date: Fri, 31 Mar 2023 23:33:04 +0100
|
||||||
|
Subject: [PATCH] mkfs.jffs2: add --graft option
|
||||||
|
|
||||||
|
Allows creation of image from more than one source directory tree,
|
||||||
|
using --graft src:dest to graft new subtrees into the output. For
|
||||||
|
example
|
||||||
|
|
||||||
|
mkfs.jffs2 -r ./rootfs --graft $HOME/Pictures:/pictures
|
||||||
|
|
||||||
|
to add your photo collection into the filesystem at /pictures
|
||||||
|
without first copying it to rootfs
|
||||||
|
---
|
||||||
|
jffsX-utils/mkfs.jffs2.c | 61 ++++++++++++++++++++++++++++++++++++++--
|
||||||
|
1 file changed, 59 insertions(+), 2 deletions(-)
|
||||||
|
|
||||||
|
diff --git a/jffsX-utils/mkfs.jffs2.c b/jffsX-utils/mkfs.jffs2.c
|
||||||
|
index bd67634..c54bcb8 100644
|
||||||
|
--- a/jffsX-utils/mkfs.jffs2.c
|
||||||
|
+++ b/jffsX-utils/mkfs.jffs2.c
|
||||||
|
@@ -112,6 +112,13 @@ static int squash_perms = 0;
|
||||||
|
static int fake_times = 0;
|
||||||
|
int target_endian = __BYTE_ORDER;
|
||||||
|
|
||||||
|
+struct graft {
|
||||||
|
+ struct graft *next;
|
||||||
|
+ const char * source;
|
||||||
|
+ const char * dest;
|
||||||
|
+} * grafts = 0;
|
||||||
|
+
|
||||||
|
+
|
||||||
|
static uint32_t find_hardlink(struct filesystem_entry *e)
|
||||||
|
{
|
||||||
|
struct filesystem_entry *f;
|
||||||
|
@@ -597,6 +604,14 @@ static void cleanup(struct filesystem_entry *dir)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
+static void free_grafts(struct graft *graft)
|
||||||
|
+{
|
||||||
|
+ if(graft->next) free_grafts(graft->next);
|
||||||
|
+ free((char *)graft->source);
|
||||||
|
+ free((char *)graft);
|
||||||
|
+}
|
||||||
|
+
|
||||||
|
+
|
||||||
|
/* Here is where we do the actual creation of the file system */
|
||||||
|
#include "mtd/jffs2-user.h"
|
||||||
|
|
||||||
|
@@ -1359,6 +1374,7 @@ static void create_target_filesystem(struct filesystem_entry *root)
|
||||||
|
static struct option long_options[] = {
|
||||||
|
{"pad", 2, NULL, 'p'},
|
||||||
|
{"root", 1, NULL, 'r'},
|
||||||
|
+ {"graft", 1, NULL, 'G'},
|
||||||
|
{"pagesize", 1, NULL, 's'},
|
||||||
|
{"eraseblock", 1, NULL, 'e'},
|
||||||
|
{"output", 1, NULL, 'o'},
|
||||||
|
@@ -1396,6 +1412,9 @@ static const char helptext[] =
|
||||||
|
" not specified, the output is padded to the end of\n"
|
||||||
|
" the final erase block\n"
|
||||||
|
" -r, -d, --root=DIR Build file system from directory DIR (default: cwd)\n"
|
||||||
|
+" -G, --graft=SOURCE:DEST Add contents of SOURCE directory at DEST in image.\n"
|
||||||
|
+" May be given more than once. DEST must exist in\n"
|
||||||
|
+" root DIR or a previous graft. \n"
|
||||||
|
" -s, --pagesize=SIZE Use page size (max data node size) SIZE.\n"
|
||||||
|
" Set according to target system's memory management\n"
|
||||||
|
" page size (default: 4KiB)\n"
|
||||||
|
@@ -1430,6 +1449,24 @@ static const char helptext[] =
|
||||||
|
" -V, --version Display version information\n"
|
||||||
|
" -i, --incremental=FILE Parse FILE and generate appendage output for it\n\n";
|
||||||
|
|
||||||
|
+static int add_graft(const char * source, const char *dest)
|
||||||
|
+{
|
||||||
|
+ struct graft * graft;
|
||||||
|
+ struct stat st;
|
||||||
|
+
|
||||||
|
+ if (stat(source, &st)) {
|
||||||
|
+ errmsg_die("bad graft source '%s'", source);
|
||||||
|
+ }
|
||||||
|
+
|
||||||
|
+ if(!grafts) grafts = calloc(sizeof (struct graft), 1);
|
||||||
|
+ for(graft = grafts; graft->next; graft = graft->next)
|
||||||
|
+ ;
|
||||||
|
+ graft->source = source;
|
||||||
|
+ graft->dest = dest;
|
||||||
|
+ graft->next = calloc(sizeof (struct graft), 1);
|
||||||
|
+ return 0;
|
||||||
|
+}
|
||||||
|
+
|
||||||
|
static int load_next_block(void) {
|
||||||
|
|
||||||
|
int ret;
|
||||||
|
@@ -1579,7 +1616,7 @@ int main(int argc, char **argv)
|
||||||
|
jffs2_compressors_init();
|
||||||
|
|
||||||
|
while ((opt = getopt_long(argc, argv,
|
||||||
|
- "D:d:r:s:o:qUPfh?vVe:lbp::nc:m:x:X:Lty:i:", long_options, &c)) >= 0)
|
||||||
|
+ "D:d:r:G:s:o:qUPfh?vVe:lbp::nc:m:x:X:Lty:i:", long_options, &c)) >= 0)
|
||||||
|
{
|
||||||
|
switch (opt) {
|
||||||
|
case 'D':
|
||||||
|
@@ -1598,6 +1635,18 @@ int main(int argc, char **argv)
|
||||||
|
rootdir = xstrdup(optarg);
|
||||||
|
break;
|
||||||
|
|
||||||
|
+ case 'G':
|
||||||
|
+ if(strchr(optarg, ':')) {
|
||||||
|
+ char * src_name, * dest_name;
|
||||||
|
+ src_name = xstrdup(optarg);
|
||||||
|
+ dest_name = strchr(src_name, ':');
|
||||||
|
+ *dest_name = '\0';
|
||||||
|
+ dest_name++;
|
||||||
|
+ add_graft(src_name, dest_name);
|
||||||
|
+ } else
|
||||||
|
+ errmsg_die("bad graft specification '%s', expecting source:dest",
|
||||||
|
+ optarg);
|
||||||
|
+ break;
|
||||||
|
case 's':
|
||||||
|
page_size = strtol(optarg, NULL, 0);
|
||||||
|
warn_page_size = 0; /* set by user, so don't need to warn */
|
||||||
|
@@ -1784,13 +1833,21 @@ int main(int argc, char **argv)
|
||||||
|
parse_image();
|
||||||
|
|
||||||
|
root = recursive_add_host_directory(NULL, "/", cwd);
|
||||||
|
-
|
||||||
|
+ for(struct graft *g = grafts; g->source; g=g->next) {
|
||||||
|
+ struct filesystem_entry * entry =
|
||||||
|
+ find_filesystem_entry(root, (char *) g->dest, S_IFDIR);
|
||||||
|
+ if(!entry)
|
||||||
|
+ errmsg_die("missing directory %s for graft point %s",
|
||||||
|
+ g->dest, g->source);
|
||||||
|
+ recursive_add_host_directory(entry, g->dest, g->source);
|
||||||
|
+ }
|
||||||
|
if (devtable)
|
||||||
|
parse_device_table(root, devtable);
|
||||||
|
|
||||||
|
create_target_filesystem(root);
|
||||||
|
|
||||||
|
cleanup(root);
|
||||||
|
+ free_grafts(grafts);
|
||||||
|
|
||||||
|
if (rootdir != default_rootdir)
|
||||||
|
free(rootdir);
|
||||||
|
--
|
||||||
|
2.38.1
|
||||||
|
|
||||||
Loading…
Reference in a new issue