Em Sun, Aug 21, 2016 at 03:57:33PM +0800, Shawn Lin escreveu:
> lzma_decompress_to_file never actually close the file
> pointer, let's fix it.
>
> Signed-off-by: Shawn Lin <shawn....@rock-chips.com>
Thanks, I changed the logic a bit to shorten the patch, this is how it
ended up:
commit ffe67c2fabf128122b30fbf0ac498928e171b0b3
Author: Shawn Lin <shawn....@rock-chips.com>
Date: Sun Aug 21 15:57:33 2016 +0800
perf tools: Fix error handling of lzma decompression
lzma_decompress_to_file() never actually closes the file pointer, let's
fix it.
Signed-off-by: Shawn Lin <shawn....@rock-chips.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Link:
http://lkml.kernel.org/r/1471766253-1964-1-git-send-email-shawn....@rock-chips.com
[ Make err = -1, the common case, set it to 0 before the error label ]
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
diff --git a/tools/perf/util/lzma.c b/tools/perf/util/lzma.c
index 95a1acb61245..9ddea5cecd94 100644
--- a/tools/perf/util/lzma.c
+++ b/tools/perf/util/lzma.c
@@ -29,6 +29,7 @@ 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];
@@ -45,7 +46,7 @@ int lzma_decompress_to_file(const char *input, int output_fd)
if (ret != LZMA_OK) {
pr_err("lzma: lzma_stream_decoder failed %s (%d)\n",
lzma_strerror(ret), ret);
- return -1;
+ goto err_fclose;
}
strm.next_in = NULL;
@@ -60,7 +61,7 @@ int lzma_decompress_to_file(const char *input, int output_fd)
if (ferror(infile)) {
pr_err("lzma: read error: %s\n",
strerror(errno));
- return -1;
+ goto err_fclose;
}
if (feof(infile))
@@ -74,7 +75,7 @@ int lzma_decompress_to_file(const char *input, int output_fd)
if (writen(output_fd, buf_out, write_size) !=
write_size) {
pr_err("lzma: write error: %s\n",
strerror(errno));
- return -1;
+ goto err_fclose;
}
strm.next_out = buf_out;
@@ -83,13 +84,15 @@ int lzma_decompress_to_file(const char *input, int
output_fd)
if (ret != LZMA_OK) {
if (ret == LZMA_STREAM_END)
- return 0;
+ break;
pr_err("lzma: failed %s\n", lzma_strerror(ret));
- return -1;
+ goto err_fclose;
}
}
+ err = 0;
+err_fclose:
fclose(infile);
- return 0;
+ return err;
}
>
> tools/perf/util/lzma.c | 19 ++++++++++++-------
> 1 file changed, 12 insertions(+), 7 deletions(-)
>
> diff --git a/tools/perf/util/lzma.c b/tools/perf/util/lzma.c
> index 95a1acb..a95d473 100644
> --- a/tools/perf/util/lzma.c
> +++ b/tools/perf/util/lzma.c
> @@ -29,6 +29,7 @@ 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 = 0;
>
> u8 buf_in[BUFSIZE];
> u8 buf_out[BUFSIZE];
> @@ -45,7 +46,8 @@ int lzma_decompress_to_file(const char *input, int
> output_fd)
> if (ret != LZMA_OK) {
> pr_err("lzma: lzma_stream_decoder failed %s (%d)\n",
> lzma_strerror(ret), ret);
> - return -1;
> + err = -1;
> + goto err_fclose;
> }
>
> strm.next_in = NULL;
> @@ -60,7 +62,8 @@ int lzma_decompress_to_file(const char *input, int
> output_fd)
>
> if (ferror(infile)) {
> pr_err("lzma: read error: %s\n",
> strerror(errno));
> - return -1;
> + err = -1;
> + goto err_fclose;
> }
>
> if (feof(infile))
> @@ -74,7 +77,8 @@ int lzma_decompress_to_file(const char *input, int
> output_fd)
>
> if (writen(output_fd, buf_out, write_size) !=
> write_size) {
> pr_err("lzma: write error: %s\n",
> strerror(errno));
> - return -1;
> + err = -1;
> + goto err_fclose;
> }
>
> strm.next_out = buf_out;
> @@ -83,13 +87,14 @@ int lzma_decompress_to_file(const char *input, int
> output_fd)
>
> if (ret != LZMA_OK) {
> if (ret == LZMA_STREAM_END)
> - return 0;
> + goto err_fclose;
>
> pr_err("lzma: failed %s\n", lzma_strerror(ret));
> - return -1;
> + err = -1;
> + goto err_fclose;
> }
> }
> -
> +err_fclose:
> fclose(infile);
> - return 0;
> + return err;
> }
> --
> 2.3.7
>
