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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/tools/perf/util/lzma.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/tools/perf/util/lzma.c')
-rw-r--r--kernel/tools/perf/util/lzma.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/kernel/tools/perf/util/lzma.c b/kernel/tools/perf/util/lzma.c
new file mode 100644
index 000000000..95a1acb61
--- /dev/null
+++ b/kernel/tools/perf/util/lzma.c
@@ -0,0 +1,95 @@
+#include <lzma.h>
+#include <stdio.h>
+#include <linux/compiler.h>
+#include "util.h"
+#include "debug.h"
+
+#define BUFSIZE 8192
+
+static const char *lzma_strerror(lzma_ret ret)
+{
+ switch ((int) ret) {
+ case LZMA_MEM_ERROR:
+ return "Memory allocation failed";
+ case LZMA_OPTIONS_ERROR:
+ return "Unsupported decompressor flags";
+ case LZMA_FORMAT_ERROR:
+ return "The input is not in the .xz format";
+ case LZMA_DATA_ERROR:
+ return "Compressed file is corrupt";
+ case LZMA_BUF_ERROR:
+ return "Compressed file is truncated or otherwise corrupt";
+ default:
+ return "Unknown error, possibly a bug";
+ }
+}
+
+int lzma_decompress_to_file(const char *input, int output_fd)
+{
+ lzma_action action = LZMA_RUN;
+ lzma_stream strm = LZMA_STREAM_INIT;
+ lzma_ret ret;
+
+ u8 buf_in[BUFSIZE];
+ u8 buf_out[BUFSIZE];
+ FILE *infile;
+
+ infile = fopen(input, "rb");
+ if (!infile) {
+ pr_err("lzma: fopen failed on %s: '%s'\n",
+ input, strerror(errno));
+ return -1;
+ }
+
+ ret = lzma_stream_decoder(&strm, UINT64_MAX, LZMA_CONCATENATED);
+ if (ret != LZMA_OK) {
+ pr_err("lzma: lzma_stream_decoder failed %s (%d)\n",
+ lzma_strerror(ret), ret);
+ return -1;
+ }
+
+ strm.next_in = NULL;
+ strm.avail_in = 0;
+ strm.next_out = buf_out;
+ strm.avail_out = sizeof(buf_out);
+
+ while (1) {
+ if (strm.avail_in == 0 && !feof(infile)) {
+ strm.next_in = buf_in;
+ strm.avail_in = fread(buf_in, 1, sizeof(buf_in), infile);
+
+ if (ferror(infile)) {
+ pr_err("lzma: read error: %s\n", strerror(errno));
+ return -1;
+ }
+
+ if (feof(infile))
+ action = LZMA_FINISH;
+ }
+
+ ret = lzma_code(&strm, action);
+
+ if (strm.avail_out == 0 || ret == LZMA_STREAM_END) {
+ ssize_t write_size = sizeof(buf_out) - strm.avail_out;
+
+ if (writen(output_fd, buf_out, write_size) != write_size) {
+ pr_err("lzma: write error: %s\n", strerror(errno));
+ return -1;
+ }
+
+ strm.next_out = buf_out;
+ strm.avail_out = sizeof(buf_out);
+ }
+
+ if (ret != LZMA_OK) {
+ if (ret == LZMA_STREAM_END)
+ return 0;
+
+ pr_err("lzma: failed %s\n", lzma_strerror(ret));
+ return -1;
+ }
+ }
+
+ fclose(infile);
+ return 0;
+}