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-rw-r--r--package/boot/kexec-tools/patches/0001-Fix-zlib-lzma-decompression.patch171
1 files changed, 171 insertions, 0 deletions
diff --git a/package/boot/kexec-tools/patches/0001-Fix-zlib-lzma-decompression.patch b/package/boot/kexec-tools/patches/0001-Fix-zlib-lzma-decompression.patch
new file mode 100644
index 0000000000..06c11ec350
--- /dev/null
+++ b/package/boot/kexec-tools/patches/0001-Fix-zlib-lzma-decompression.patch
@@ -0,0 +1,171 @@
+From d606837b56d46eb7f815b5d85f07fcc3f1555d00 Mon Sep 17 00:00:00 2001
+From: Yousong Zhou <yszhou4tech@gmail.com>
+Date: Sun, 1 Feb 2015 00:10:07 +0800
+Subject: [PATCH 1/5] Fix zlib/lzma decompression.
+
+Let {zlib,lzma}_decompress_file() return NULL if anything wrong happened
+to allow the other method to have a chance to run.
+
+Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
+Signed-off-by: Simon Horman <horms@verge.net.au>
+---
+ kexec/lzma.c | 33 ++++++++++++++++++++++-----------
+ kexec/zlib.c | 57 +++++++++++++++++++++++++++++++++++----------------------
+ 2 files changed, 57 insertions(+), 33 deletions(-)
+
+diff --git a/kexec/lzma.c b/kexec/lzma.c
+index 939aeb3..5bfccb7 100644
+--- a/kexec/lzma.c
++++ b/kexec/lzma.c
+@@ -162,13 +162,16 @@ char *lzma_decompress_file(const char *filename, off_t *r_size)
+ off_t size, allocated;
+ ssize_t result;
+
+- if (!filename) {
+- *r_size = 0;
+- return 0;
+- }
++ dbgprintf("Try LZMA decompression.\n");
++
++ *r_size = 0;
++ if (!filename)
++ return NULL;
++
+ fp = lzopen(filename, "rb");
+ if (fp == 0) {
+- die("Cannot open `%s'\n", filename);
++ dbgprintf("Cannot open `%s'\n", filename);
++ return NULL;
+ }
+ size = 0;
+ allocated = 65536;
+@@ -183,17 +186,25 @@ char *lzma_decompress_file(const char *filename, off_t *r_size)
+ if ((errno == EINTR) || (errno == EAGAIN))
+ continue;
+
+- die ("read on %s of %ld bytes failed\n",
+- filename, (allocated - size) + 0UL);
++ dbgprintf("%s: read on %s of %ld bytes failed\n",
++ __func__, filename, (allocated - size) + 0UL);
++ break;
+ }
+ size += result;
+- } while(result > 0);
+- result = lzclose(fp);
+- if (result != LZMA_OK) {
+- die ("Close of %s failed\n", filename);
++ } while (result > 0);
++
++ if (lzclose(fp) != LZMA_OK) {
++ dbgprintf("%s: Close of %s failed\n", __func__, filename);
++ goto fail;
+ }
++ if (result < 0)
++ goto fail;
++
+ *r_size = size;
+ return buf;
++fail:
++ free(buf);
++ return NULL;
+ }
+ #else
+ char *lzma_decompress_file(const char *UNUSED(filename), off_t *UNUSED(r_size))
+diff --git a/kexec/zlib.c b/kexec/zlib.c
+index d44df12..7170ac3 100644
+--- a/kexec/zlib.c
++++ b/kexec/zlib.c
+@@ -15,29 +15,39 @@
+ #include <ctype.h>
+ #include <zlib.h>
+
++static void _gzerror(gzFile fp, int *errnum, const char **errmsg)
++{
++ *errmsg = gzerror(fp, errnum);
++ if (*errnum == Z_ERRNO) {
++ *errmsg = strerror(*errnum);
++ }
++}
++
+ char *zlib_decompress_file(const char *filename, off_t *r_size)
+ {
+ gzFile fp;
+ int errnum;
+ const char *msg;
+ char *buf;
+- off_t size, allocated;
++ off_t size = 0, allocated;
+ ssize_t result;
+
++ dbgprintf("Try gzip decompression.\n");
++
++ *r_size = 0;
+ if (!filename) {
+- *r_size = 0;
+- return 0;
++ return NULL;
+ }
+ fp = gzopen(filename, "rb");
+ if (fp == 0) {
+- msg = gzerror(fp, &errnum);
+- if (errnum == Z_ERRNO) {
+- msg = strerror(errno);
+- }
+- fprintf(stderr, "Cannot open `%s': %s\n", filename, msg);
++ _gzerror(fp, &errnum, &msg);
++ dbgprintf("Cannot open `%s': %s\n", filename, msg);
++ return NULL;
++ }
++ if (gzdirect(fp)) {
++ /* It's not in gzip format */
+ return NULL;
+ }
+- size = 0;
+ allocated = 65536;
+ buf = xmalloc(allocated);
+ do {
+@@ -49,25 +59,28 @@ char *zlib_decompress_file(const char *filename, off_t *r_size)
+ if (result < 0) {
+ if ((errno == EINTR) || (errno == EAGAIN))
+ continue;
+-
+- msg = gzerror(fp, &errnum);
+- if (errnum == Z_ERRNO) {
+- msg = strerror(errno);
+- }
+- die ("read on %s of %ld bytes failed: %s\n",
+- filename, (allocated - size) + 0UL, msg);
++ _gzerror(fp, &errnum, &msg);
++ dbgprintf("Read on %s of %ld bytes failed: %s\n",
++ filename, (allocated - size) + 0UL, msg);
++ size = 0;
++ goto fail;
+ }
+ size += result;
+ } while(result > 0);
++
++fail:
+ result = gzclose(fp);
+ if (result != Z_OK) {
+- msg = gzerror(fp, &errnum);
+- if (errnum == Z_ERRNO) {
+- msg = strerror(errno);
+- }
+- die ("Close of %s failed: %s\n", filename, msg);
++ _gzerror(fp, &errnum, &msg);
++ dbgprintf(" Close of %s failed: %s\n", filename, msg);
++ }
++
++ if (size > 0) {
++ *r_size = size;
++ } else {
++ free(buf);
++ buf = NULL;
+ }
+- *r_size = size;
+ return buf;
+ }
+ #else
+--
+1.7.10.4
+