diff options
Diffstat (limited to 'tools/perf/util/util.c')
| -rw-r--r-- | tools/perf/util/util.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 6ea0b4ae956..b1d5376b9dd 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -152,16 +152,14 @@ unsigned long convert_unit(unsigned long value, char *unit) return value; } -/* - * Read exactly 'n' bytes or return an error. - */ -ssize_t readn(int fd, void *buf, size_t n) +static ssize_t ion(bool is_read, int fd, void *buf, size_t n) { void *buf_start = buf; size_t left = n; while (left) { - ssize_t ret = read(fd, buf, left); + ssize_t ret = is_read ? read(fd, buf, left) : + write(fd, buf, left); if (ret <= 0) return ret; @@ -174,6 +172,22 @@ ssize_t readn(int fd, void *buf, size_t 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, void *buf, size_t n) +{ + return ion(false, fd, buf, n); +} + size_t hex_width(u64 v) { size_t n = 1; |