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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>
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@ -1709,7 +1709,7 @@ static int process_nrcpus(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int fd,
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void *data __maybe_unused)
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{
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size_t ret;
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ssize_t ret;
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u32 nr;
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ret = readn(fd, &nr, sizeof(nr));
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@ -1753,7 +1753,7 @@ static int process_total_mem(struct perf_file_section *section __maybe_unused,
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void *data __maybe_unused)
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{
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uint64_t mem;
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size_t ret;
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ssize_t ret;
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ret = readn(fd, &mem, sizeof(mem));
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if (ret != sizeof(mem))
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@ -1822,7 +1822,7 @@ static int process_cmdline(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int fd,
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void *data __maybe_unused)
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{
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size_t ret;
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ssize_t ret;
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char *str;
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u32 nr, i;
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struct strbuf sb;
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@ -1858,7 +1858,7 @@ static int process_cpu_topology(struct perf_file_section *section __maybe_unused
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struct perf_header *ph, int fd,
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void *data __maybe_unused)
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{
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size_t ret;
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ssize_t ret;
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u32 nr, i;
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char *str;
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struct strbuf sb;
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@ -1914,7 +1914,7 @@ static int process_numa_topology(struct perf_file_section *section __maybe_unuse
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struct perf_header *ph, int fd,
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void *data __maybe_unused)
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{
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size_t ret;
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ssize_t ret;
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u32 nr, node, i;
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char *str;
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uint64_t mem_total, mem_free;
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@ -1974,7 +1974,7 @@ static int process_pmu_mappings(struct perf_file_section *section __maybe_unused
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struct perf_header *ph, int fd,
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void *data __maybe_unused)
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{
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size_t ret;
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ssize_t ret;
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char *name;
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u32 pmu_num;
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u32 type;
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@ -2534,7 +2534,7 @@ static int check_magic_endian(u64 magic, uint64_t hdr_sz,
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int perf_file_header__read(struct perf_file_header *header,
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struct perf_header *ph, int fd)
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{
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int ret;
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ssize_t ret;
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lseek(fd, 0, SEEK_SET);
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@ -2628,7 +2628,7 @@ static int perf_file_header__read_pipe(struct perf_pipe_file_header *header,
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struct perf_header *ph, int fd,
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bool repipe)
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{
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int ret;
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ssize_t ret;
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ret = readn(fd, header, sizeof(*header));
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if (ret <= 0)
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@ -2669,7 +2669,7 @@ static int read_attr(int fd, struct perf_header *ph,
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struct perf_event_attr *attr = &f_attr->attr;
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size_t sz, left;
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size_t our_sz = sizeof(f_attr->attr);
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int ret;
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ssize_t ret;
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memset(f_attr, 0, sizeof(*f_attr));
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@ -1158,7 +1158,7 @@ static int __perf_session__process_pipe_events(struct perf_session *session,
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void *buf = NULL;
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int skip = 0;
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u64 head;
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int err;
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ssize_t err;
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void *p;
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perf_tool__fill_defaults(tool);
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@ -151,12 +151,12 @@ unsigned long convert_unit(unsigned long value, char *unit)
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return value;
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}
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int readn(int fd, void *buf, size_t n)
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ssize_t readn(int fd, void *buf, size_t n)
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{
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void *buf_start = buf;
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while (n) {
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int ret = read(fd, buf, n);
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ssize_t ret = read(fd, buf, n);
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if (ret <= 0)
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return ret;
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@ -253,7 +253,7 @@ bool strlazymatch(const char *str, const char *pat);
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int strtailcmp(const char *s1, const char *s2);
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char *strxfrchar(char *s, char from, char to);
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unsigned long convert_unit(unsigned long value, char *unit);
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int readn(int fd, void *buf, size_t size);
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ssize_t readn(int fd, void *buf, size_t n);
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struct perf_event_attr;
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