mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 09:01:47 +07:00
8520a98dba
All we need there is a forward declaration for 'union perf_event', so remove it from there and add missing header directives in places using things from this indirect include. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-7ftk0ztstqub1tirjj8o8xbl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
123 lines
2.6 KiB
C
123 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <errno.h>
|
|
#include <lzma.h>
|
|
#include <stdio.h>
|
|
#include <linux/compiler.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include "compress.h"
|
|
#include "util.h"
|
|
#include "debug.h"
|
|
#include <string.h>
|
|
#include <unistd.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;
|
|
int err = -1;
|
|
|
|
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);
|
|
goto err_fclose;
|
|
}
|
|
|
|
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));
|
|
goto err_fclose;
|
|
}
|
|
|
|
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));
|
|
goto err_fclose;
|
|
}
|
|
|
|
strm.next_out = buf_out;
|
|
strm.avail_out = sizeof(buf_out);
|
|
}
|
|
|
|
if (ret != LZMA_OK) {
|
|
if (ret == LZMA_STREAM_END)
|
|
break;
|
|
|
|
pr_err("lzma: failed %s\n", lzma_strerror(ret));
|
|
goto err_fclose;
|
|
}
|
|
}
|
|
|
|
err = 0;
|
|
err_fclose:
|
|
fclose(infile);
|
|
return err;
|
|
}
|
|
|
|
bool lzma_is_compressed(const char *input)
|
|
{
|
|
int fd = open(input, O_RDONLY);
|
|
const uint8_t magic[6] = { 0xFD, '7', 'z', 'X', 'Z', 0x00 };
|
|
char buf[6] = { 0 };
|
|
ssize_t rc;
|
|
|
|
if (fd < 0)
|
|
return -1;
|
|
|
|
rc = read(fd, buf, sizeof(buf));
|
|
close(fd);
|
|
return rc == sizeof(buf) ?
|
|
memcmp(buf, magic, sizeof(buf)) == 0 : false;
|
|
}
|