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-rw-r--r--meta/recipes-devtools/e2fsprogs/e2fsprogs/0005-misc-create_inode.c-copy-regular-file.patch224
1 files changed, 224 insertions, 0 deletions
diff --git a/meta/recipes-devtools/e2fsprogs/e2fsprogs/0005-misc-create_inode.c-copy-regular-file.patch b/meta/recipes-devtools/e2fsprogs/e2fsprogs/0005-misc-create_inode.c-copy-regular-file.patch
new file mode 100644
index 0000000..7935cd8
--- /dev/null
+++ b/meta/recipes-devtools/e2fsprogs/e2fsprogs/0005-misc-create_inode.c-copy-regular-file.patch
@@ -0,0 +1,224 @@
1From 2973c74afaa532f3f72639b463322b2523519c20 Mon Sep 17 00:00:00 2001
2From: Robert Yang <liezhi.yang@windriver.com>
3Date: Mon, 23 Dec 2013 03:28:12 -0500
4Subject: [PATCH 05/11] misc/create_inode.c: copy regular file
5
6The do_write_internal() is used for copying file from native fs to
7target, most of the code are from debugfs/debugfs.c, the
8debugfs/debugfs.c will be modified to use this function.
9
10Upstream-Status: Backport
11
12Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
13Reviewed-by: Darren Hart <dvhart@linux.intel.com>
14---
15 misc/create_inode.c | 183 +++++++++++++++++++++++++++++++++++++++++++++++++++
16 1 file changed, 183 insertions(+)
17
18diff --git a/misc/create_inode.c b/misc/create_inode.c
19index f845103..98f4a93 100644
20--- a/misc/create_inode.c
21+++ b/misc/create_inode.c
22@@ -8,6 +8,16 @@
23 # endif
24 #endif
25
26+/* 64KiB is the minimium blksize to best minimize system call overhead. */
27+#ifndef IO_BUFSIZE
28+#define IO_BUFSIZE 64*1024
29+#endif
30+
31+/* Block size for `st_blocks' */
32+#ifndef S_BLKSIZE
33+#define S_BLKSIZE 512
34+#endif
35+
36 /* Make a special file which is block, character and fifo */
37 errcode_t do_mknod_internal(ext2_ino_t cwd, const char *name, struct stat *st)
38 {
39@@ -127,9 +137,182 @@ errcode_t do_mkdir_internal(ext2_ino_t cwd, const char *name, struct stat *st)
40 {
41 }
42
43+static errcode_t copy_file(int fd, ext2_ino_t newfile, int bufsize, int make_holes)
44+{
45+ ext2_file_t e2_file;
46+ errcode_t retval;
47+ int got;
48+ unsigned int written;
49+ char *buf;
50+ char *ptr;
51+ char *zero_buf;
52+ int cmp;
53+
54+ retval = ext2fs_file_open(current_fs, newfile,
55+ EXT2_FILE_WRITE, &e2_file);
56+ if (retval)
57+ return retval;
58+
59+ retval = ext2fs_get_mem(bufsize, &buf);
60+ if (retval) {
61+ com_err("copy_file", retval, "can't allocate buffer\n");
62+ return retval;
63+ }
64+
65+ /* This is used for checking whether the whole block is zero */
66+ retval = ext2fs_get_memzero(bufsize, &zero_buf);
67+ if (retval) {
68+ com_err("copy_file", retval, "can't allocate buffer\n");
69+ ext2fs_free_mem(&buf);
70+ return retval;
71+ }
72+
73+ while (1) {
74+ got = read(fd, buf, bufsize);
75+ if (got == 0)
76+ break;
77+ if (got < 0) {
78+ retval = errno;
79+ goto fail;
80+ }
81+ ptr = buf;
82+
83+ /* Sparse copy */
84+ if (make_holes) {
85+ /* Check whether all is zero */
86+ cmp = memcmp(ptr, zero_buf, got);
87+ if (cmp == 0) {
88+ /* The whole block is zero, make a hole */
89+ retval = ext2fs_file_lseek(e2_file, got, EXT2_SEEK_CUR, NULL);
90+ if (retval)
91+ goto fail;
92+ got = 0;
93+ }
94+ }
95+
96+ /* Normal copy */
97+ while (got > 0) {
98+ retval = ext2fs_file_write(e2_file, ptr,
99+ got, &written);
100+ if (retval)
101+ goto fail;
102+
103+ got -= written;
104+ ptr += written;
105+ }
106+ }
107+ ext2fs_free_mem(&buf);
108+ ext2fs_free_mem(&zero_buf);
109+ retval = ext2fs_file_close(e2_file);
110+ return retval;
111+
112+fail:
113+ ext2fs_free_mem(&buf);
114+ ext2fs_free_mem(&zero_buf);
115+ (void) ext2fs_file_close(e2_file);
116+ return retval;
117+}
118+
119 /* Copy the native file to the fs */
120 errcode_t do_write_internal(ext2_ino_t cwd, const char *src, const char *dest)
121 {
122+ int fd;
123+ struct stat statbuf;
124+ ext2_ino_t newfile;
125+ errcode_t retval;
126+ struct ext2_inode inode;
127+ int bufsize = IO_BUFSIZE;
128+ int make_holes = 0;
129+
130+ fd = open(src, O_RDONLY);
131+ if (fd < 0) {
132+ com_err(src, errno, 0);
133+ return errno;
134+ }
135+ if (fstat(fd, &statbuf) < 0) {
136+ com_err(src, errno, 0);
137+ close(fd);
138+ return errno;
139+ }
140+
141+ retval = ext2fs_namei(current_fs, root, cwd, dest, &newfile);
142+ if (retval == 0) {
143+ com_err(__func__, 0, "The file '%s' already exists\n", dest);
144+ close(fd);
145+ return retval;
146+ }
147+
148+ retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
149+ if (retval) {
150+ com_err(__func__, retval, 0);
151+ close(fd);
152+ return retval;
153+ }
154+#ifdef DEBUGFS
155+ printf("Allocated inode: %u\n", newfile);
156+#endif
157+ retval = ext2fs_link(current_fs, cwd, dest, newfile,
158+ EXT2_FT_REG_FILE);
159+ if (retval == EXT2_ET_DIR_NO_SPACE) {
160+ retval = ext2fs_expand_dir(current_fs, cwd);
161+ if (retval) {
162+ com_err(__func__, retval, "while expanding directory");
163+ close(fd);
164+ return retval;
165+ }
166+ retval = ext2fs_link(current_fs, cwd, dest, newfile,
167+ EXT2_FT_REG_FILE);
168+ }
169+ if (retval) {
170+ com_err(dest, retval, 0);
171+ close(fd);
172+ return retval;
173+ }
174+ if (ext2fs_test_inode_bitmap2(current_fs->inode_map, newfile))
175+ com_err(__func__, 0, "Warning: inode already set");
176+ ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
177+ memset(&inode, 0, sizeof(inode));
178+ inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
179+ inode.i_atime = inode.i_ctime = inode.i_mtime =
180+ current_fs->now ? current_fs->now : time(0);
181+ inode.i_links_count = 1;
182+ inode.i_size = statbuf.st_size;
183+ if (current_fs->super->s_feature_incompat &
184+ EXT3_FEATURE_INCOMPAT_EXTENTS) {
185+ int i;
186+ struct ext3_extent_header *eh;
187+
188+ eh = (struct ext3_extent_header *) &inode.i_block[0];
189+ eh->eh_depth = 0;
190+ eh->eh_entries = 0;
191+ eh->eh_magic = ext2fs_cpu_to_le16(EXT3_EXT_MAGIC);
192+ i = (sizeof(inode.i_block) - sizeof(*eh)) /
193+ sizeof(struct ext3_extent);
194+ eh->eh_max = ext2fs_cpu_to_le16(i);
195+ inode.i_flags |= EXT4_EXTENTS_FL;
196+ }
197+
198+ if ((retval = ext2fs_write_new_inode(current_fs, newfile, &inode))) {
199+ com_err(__func__, retval, "while creating inode %u", newfile);
200+ close(fd);
201+ return retval;
202+ }
203+ if (LINUX_S_ISREG(inode.i_mode)) {
204+ if (statbuf.st_blocks < statbuf.st_size / S_BLKSIZE) {
205+ make_holes = 1;
206+ /*
207+ * Use I/O blocksize as buffer size when
208+ * copying sparse files.
209+ */
210+ bufsize = statbuf.st_blksize;
211+ }
212+ retval = copy_file(fd, newfile, bufsize, make_holes);
213+ if (retval)
214+ com_err("copy_file", retval, 0);
215+ }
216+ close(fd);
217+
218+ return 0;
219 }
220
221 /* Copy files from source_dir to fs */
222--
2231.7.10.4
224