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| author | Jiri Olsa <jolsa@kernel.org> | 2018-08-17 11:48:09 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-08-20 13:54:59 +0200 |
| commit | c9a8a6131fb68f6eabec34fd855e69b4855155e4 (patch) | |
| tree | 3da5dd231fc0fcaf1b31610f884230a97c10387a /tools | |
| parent | perf tools: Use compression id in decompress_kmodule() (diff) | |
| download | linux-c9a8a6131fb68f6eabec34fd855e69b4855155e4.tar.xz linux-c9a8a6131fb68f6eabec34fd855e69b4855155e4.zip | |
perf tools: Move the temp file processing into decompress_kmodule
We will add a compression check in the following patch and it makes it
easier if the file processing is done in a single place. It also makes
the current code simpler.
The decompress_kmodule function now returns the fd of the uncompressed
file and the file name in the pathname arg, if it's provided.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180817094813.15086-10-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/dso.c | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 54bfe1f4762f..cbeecf683333 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -250,8 +250,10 @@ bool dso__needs_decompress(struct dso *dso) dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE_COMP; } -static int decompress_kmodule(struct dso *dso, const char *name, char *tmpbuf) +static int decompress_kmodule(struct dso *dso, const char *name, + char *pathname, size_t len) { + char tmpbuf[] = KMOD_DECOMP_NAME; int fd = -1; if (!dso__needs_decompress(dso)) @@ -272,34 +274,27 @@ static int decompress_kmodule(struct dso *dso, const char *name, char *tmpbuf) fd = -1; } + if (!pathname || (fd < 0)) + unlink(tmpbuf); + + if (pathname && (fd >= 0)) + strncpy(pathname, tmpbuf, len); + return fd; } int dso__decompress_kmodule_fd(struct dso *dso, const char *name) { - char tmpbuf[] = KMOD_DECOMP_NAME; - int fd; - - fd = decompress_kmodule(dso, name, tmpbuf); - unlink(tmpbuf); - return fd; + return decompress_kmodule(dso, name, NULL, 0); } int dso__decompress_kmodule_path(struct dso *dso, const char *name, char *pathname, size_t len) { - char tmpbuf[] = KMOD_DECOMP_NAME; - int fd; - - fd = decompress_kmodule(dso, name, tmpbuf); - if (fd < 0) { - unlink(tmpbuf); - return -1; - } + int fd = decompress_kmodule(dso, name, pathname, len); - strncpy(pathname, tmpbuf, len); close(fd); - return 0; + return fd >= 0 ? 0 : -1; } /* |