^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * JFFS2 -- Journalling Flash File System, Version 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright © 2001-2007 Red Hat, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Created by David Woodhouse <dwmw2@infradead.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * For licensing information, see the file 'LICENCE' in this directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/crc32.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/mtd/mtd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "nodelist.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "compr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct jffs2_full_dnode *fd, unsigned char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) int ofs, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct jffs2_raw_inode *ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) size_t readlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) uint32_t crc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) unsigned char *decomprbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) unsigned char *readbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ri = jffs2_alloc_raw_inode();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (!ri)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) ret = jffs2_flash_read(c, ref_offset(fd->raw), sizeof(*ri), &readlen, (char *)ri);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) jffs2_free_raw_inode(ri);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) pr_warn("Error reading node from 0x%08x: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) ref_offset(fd->raw), ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if (readlen != sizeof(*ri)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) jffs2_free_raw_inode(ri);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) pr_warn("Short read from 0x%08x: wanted 0x%zx bytes, got 0x%zx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) ref_offset(fd->raw), sizeof(*ri), readlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) crc = crc32(0, ri, sizeof(*ri)-8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) jffs2_dbg(1, "Node read from %08x: node_crc %08x, calculated CRC %08x. dsize %x, csize %x, offset %x, buf %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ref_offset(fd->raw), je32_to_cpu(ri->node_crc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) crc, je32_to_cpu(ri->dsize), je32_to_cpu(ri->csize),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) je32_to_cpu(ri->offset), buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (crc != je32_to_cpu(ri->node_crc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) pr_warn("Node CRC %08x != calculated CRC %08x for node at %08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) je32_to_cpu(ri->node_crc), crc, ref_offset(fd->raw));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) goto out_ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /* There was a bug where we wrote hole nodes out with csize/dsize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) swapped. Deal with it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (ri->compr == JFFS2_COMPR_ZERO && !je32_to_cpu(ri->dsize) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) je32_to_cpu(ri->csize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ri->dsize = ri->csize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) ri->csize = cpu_to_je32(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) D1(if(ofs + len > je32_to_cpu(ri->dsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) pr_warn("jffs2_read_dnode() asked for %d bytes at %d from %d-byte node\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) len, ofs, je32_to_cpu(ri->dsize));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) goto out_ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) });
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (ri->compr == JFFS2_COMPR_ZERO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) memset(buf, 0, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) goto out_ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* Cases:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) Reading whole node and it's uncompressed - read directly to buffer provided, check CRC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) Reading whole node and it's compressed - read into comprbuf, check CRC and decompress to buffer provided
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) Reading partial node and it's uncompressed - read into readbuf, check CRC, and copy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) Reading partial node and it's compressed - read into readbuf, check checksum, decompress to decomprbuf and copy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (ri->compr == JFFS2_COMPR_NONE && len == je32_to_cpu(ri->dsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) readbuf = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) readbuf = kmalloc(je32_to_cpu(ri->csize), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (!readbuf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) goto out_ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (ri->compr != JFFS2_COMPR_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (len < je32_to_cpu(ri->dsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) decomprbuf = kmalloc(je32_to_cpu(ri->dsize), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (!decomprbuf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) goto out_readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) decomprbuf = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) decomprbuf = readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) jffs2_dbg(2, "Read %d bytes to %p\n", je32_to_cpu(ri->csize),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) ret = jffs2_flash_read(c, (ref_offset(fd->raw)) + sizeof(*ri),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) je32_to_cpu(ri->csize), &readlen, readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (!ret && readlen != je32_to_cpu(ri->csize))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) goto out_decomprbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) crc = crc32(0, readbuf, je32_to_cpu(ri->csize));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (crc != je32_to_cpu(ri->data_crc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) pr_warn("Data CRC %08x != calculated CRC %08x for node at %08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) je32_to_cpu(ri->data_crc), crc, ref_offset(fd->raw));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) goto out_decomprbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) jffs2_dbg(2, "Data CRC matches calculated CRC %08x\n", crc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (ri->compr != JFFS2_COMPR_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) jffs2_dbg(2, "Decompress %d bytes from %p to %d bytes at %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) je32_to_cpu(ri->csize), readbuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) je32_to_cpu(ri->dsize), decomprbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) ret = jffs2_decompress(c, f, ri->compr | (ri->usercompr << 8), readbuf, decomprbuf, je32_to_cpu(ri->csize), je32_to_cpu(ri->dsize));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) pr_warn("Error: jffs2_decompress returned %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) goto out_decomprbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (len < je32_to_cpu(ri->dsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) memcpy(buf, decomprbuf+ofs, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) out_decomprbuf:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if(decomprbuf != buf && decomprbuf != readbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) kfree(decomprbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) out_readbuf:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if(readbuf != buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) kfree(readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) out_ri:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) jffs2_free_raw_inode(ri);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int jffs2_read_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) unsigned char *buf, uint32_t offset, uint32_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) uint32_t end = offset + len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct jffs2_node_frag *frag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) jffs2_dbg(1, "%s(): ino #%u, range 0x%08x-0x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) __func__, f->inocache->ino, offset, offset + len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) frag = jffs2_lookup_node_frag(&f->fragtree, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /* XXX FIXME: Where a single physical node actually shows up in two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) frags, we read it twice. Don't do that. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /* Now we're pointing at the first frag which overlaps our page
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * (or perhaps is before it, if we've been asked to read off the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * end of the file). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) while(offset < end) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) jffs2_dbg(2, "%s(): offset %d, end %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) __func__, offset, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (unlikely(!frag || frag->ofs > offset ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) frag->ofs + frag->size <= offset)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) uint32_t holesize = end - offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (frag && frag->ofs > offset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) jffs2_dbg(1, "Eep. Hole in ino #%u fraglist. frag->ofs = 0x%08x, offset = 0x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) f->inocache->ino, frag->ofs, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) holesize = min(holesize, frag->ofs - offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) jffs2_dbg(1, "Filling non-frag hole from %d-%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) offset, offset + holesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) memset(buf, 0, holesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) buf += holesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) offset += holesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) } else if (unlikely(!frag->node)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) uint32_t holeend = min(end, frag->ofs + frag->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) jffs2_dbg(1, "Filling frag hole from %d-%d (frag 0x%x 0x%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) offset, holeend, frag->ofs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) frag->ofs + frag->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) memset(buf, 0, holeend - offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) buf += holeend - offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) offset = holeend;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) frag = frag_next(frag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) uint32_t readlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) uint32_t fragofs; /* offset within the frag to start reading */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) fragofs = offset - frag->ofs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) readlen = min(frag->size - fragofs, end - offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) jffs2_dbg(1, "Reading %d-%d from node at 0x%08x (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) frag->ofs+fragofs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) frag->ofs + fragofs+readlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) ref_offset(frag->node->raw),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) ref_flags(frag->node->raw));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) ret = jffs2_read_dnode(c, f, frag->node, buf, fragofs + frag->ofs - frag->node->ofs, readlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) jffs2_dbg(2, "node read done\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) jffs2_dbg(1, "%s(): error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) __func__, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) memset(buf, 0, readlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) buf += readlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) offset += readlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) frag = frag_next(frag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) jffs2_dbg(2, "node read was OK. Looping\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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