perf tools: Use correct return type for readn function
Changing readn function return type to ssize_t because read returns
ssize_t not int.
Changing callers holding variable types as well.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1385634619-8129-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 1cd0357..3e755f2 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1709,7 +1709,7 @@
struct perf_header *ph, int fd,
void *data __maybe_unused)
{
- size_t ret;
+ ssize_t ret;
u32 nr;
ret = readn(fd, &nr, sizeof(nr));
@@ -1753,7 +1753,7 @@
void *data __maybe_unused)
{
uint64_t mem;
- size_t ret;
+ ssize_t ret;
ret = readn(fd, &mem, sizeof(mem));
if (ret != sizeof(mem))
@@ -1822,7 +1822,7 @@
struct perf_header *ph, int fd,
void *data __maybe_unused)
{
- size_t ret;
+ ssize_t ret;
char *str;
u32 nr, i;
struct strbuf sb;
@@ -1858,7 +1858,7 @@
struct perf_header *ph, int fd,
void *data __maybe_unused)
{
- size_t ret;
+ ssize_t ret;
u32 nr, i;
char *str;
struct strbuf sb;
@@ -1914,7 +1914,7 @@
struct perf_header *ph, int fd,
void *data __maybe_unused)
{
- size_t ret;
+ ssize_t ret;
u32 nr, node, i;
char *str;
uint64_t mem_total, mem_free;
@@ -1974,7 +1974,7 @@
struct perf_header *ph, int fd,
void *data __maybe_unused)
{
- size_t ret;
+ ssize_t ret;
char *name;
u32 pmu_num;
u32 type;
@@ -2534,7 +2534,7 @@
int perf_file_header__read(struct perf_file_header *header,
struct perf_header *ph, int fd)
{
- int ret;
+ ssize_t ret;
lseek(fd, 0, SEEK_SET);
@@ -2628,7 +2628,7 @@
struct perf_header *ph, int fd,
bool repipe)
{
- int ret;
+ ssize_t ret;
ret = readn(fd, header, sizeof(*header));
if (ret <= 0)
@@ -2669,7 +2669,7 @@
struct perf_event_attr *attr = &f_attr->attr;
size_t sz, left;
size_t our_sz = sizeof(f_attr->attr);
- int ret;
+ ssize_t ret;
memset(f_attr, 0, sizeof(*f_attr));
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index b0b15e2..4ce146b 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1158,7 +1158,7 @@
void *buf = NULL;
int skip = 0;
u64 head;
- int err;
+ ssize_t err;
void *p;
perf_tool__fill_defaults(tool);
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 28a0a89..9440481 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -151,12 +151,12 @@
return value;
}
-int readn(int fd, void *buf, size_t n)
+ssize_t readn(int fd, void *buf, size_t n)
{
void *buf_start = buf;
while (n) {
- int ret = read(fd, buf, n);
+ ssize_t ret = read(fd, buf, n);
if (ret <= 0)
return ret;
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index c8f362d..9f6b928 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -253,7 +253,7 @@
int strtailcmp(const char *s1, const char *s2);
char *strxfrchar(char *s, char from, char to);
unsigned long convert_unit(unsigned long value, char *unit);
-int readn(int fd, void *buf, size_t size);
+ssize_t readn(int fd, void *buf, size_t n);
struct perf_event_attr;