Commit-ID: 3b8f51a677ce574f69671e3f7822b4d8f8634ef3 Gitweb: http://git.kernel.org/tip/3b8f51a677ce574f69671e3f7822b4d8f8634ef3 Author: David Carrillo-Cisneros <[email protected]> AuthorDate: Mon, 17 Jul 2017 21:25:38 -0700 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Tue, 18 Jul 2017 23:14:30 -0300
perf header: Revamp do_write() Now that writen takes a const buffer, use it in do_write instead of duplicating its functionality. Export do_write to use it consistently in header.c and build_id.c . Signed-off-by: David Carrillo-Cisneros <[email protected]> Acked-by: David Ahern <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: He Kuang <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Turner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Simon Que <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/build-id.c | 2 +- tools/perf/util/header.c | 14 +++++--------- tools/perf/util/header.h | 2 ++ 3 files changed, 8 insertions(+), 10 deletions(-) diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c index e966515..4baa532 100644 --- a/tools/perf/util/build-id.c +++ b/tools/perf/util/build-id.c @@ -304,7 +304,7 @@ static int write_buildid(const char *name, size_t name_len, u8 *build_id, b.header.misc = misc; b.header.size = sizeof(b) + len; - err = writen(fd, &b, sizeof(b)); + err = do_write(fd, &b, sizeof(b)); if (err < 0) return err; diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 8dda19b..954f0ef 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -75,17 +75,13 @@ bool perf_header__has_feat(const struct perf_header *header, int feat) } /* Return: 0 if succeded, -ERR if failed. */ -static int do_write(int fd, const void *buf, size_t size) +int do_write(int fd, const void *buf, size_t size) { - while (size) { - int ret = write(fd, buf, size); - - if (ret < 0) - return -errno; + ssize_t ret; - size -= ret; - buf += ret; - } + ret = writen(fd, buf, size); + if (ret != (ssize_t)size) + return ret < 0 ? (int)ret : -1; return 0; } diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index d30109b..e98489c 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -144,6 +144,8 @@ bool is_perf_magic(u64 magic); #define NAME_ALIGN 64 +int do_write(int fd, const void *buf, size_t size); + int write_padded(int fd, const void *bf, size_t count, size_t count_aligned); /*
