From c03538b1f1a7e0e996a8d6feb20cf001d4b14939 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sun, 21 Jul 2019 13:24:47 +0200 Subject: libperf: Adopt the readn()/writen() functions from tools/perf Move the readn()/writen() functions into libperf. Keep those non-namespaced names because they will be shared only between perf and libperf. Again, these are not exported functions. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-61-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/util.c | 40 ---------------------------------------- 1 file changed, 40 deletions(-) (limited to 'tools/perf/util/util.c') diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index a61535cf1bca..9c3c97697387 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -384,46 +384,6 @@ int copyfile(const char *from, const char *to) return copyfile_mode(from, to, 0755); } -static ssize_t ion(bool is_read, int fd, void *buf, size_t n) -{ - void *buf_start = buf; - size_t left = n; - - while (left) { - /* buf must be treated as const if !is_read. */ - ssize_t ret = is_read ? read(fd, buf, left) : - write(fd, buf, left); - - if (ret < 0 && errno == EINTR) - continue; - if (ret <= 0) - return ret; - - left -= ret; - buf += ret; - } - - BUG_ON((size_t)(buf - buf_start) != n); - return n; -} - -/* - * Read exactly 'n' bytes or return an error. - */ -ssize_t readn(int fd, void *buf, size_t n) -{ - return ion(true, fd, buf, n); -} - -/* - * Write exactly 'n' bytes or return an error. - */ -ssize_t writen(int fd, const void *buf, size_t n) -{ - /* ion does not modify buf. */ - return ion(false, fd, (void *)buf, n); -} - size_t hex_width(u64 v) { size_t n = 1; -- cgit v1.2.1