diff options
| -rw-r--r-- | tools/perf/util/trace-event-read.c | 100 |
1 files changed, 67 insertions, 33 deletions
diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c index ba752d765ac..22ded8000ef 100644 --- a/tools/perf/util/trace-event-read.c +++ b/tools/perf/util/trace-event-read.c @@ -46,16 +46,6 @@ static int long_size; static ssize_t calc_data_size; static bool repipe; -static void *malloc_or_die(int size) -{ - void *ret; - - ret = malloc(size); - if (!ret) - die("malloc"); - return ret; -} - static int do_read(int fd, void *buf, int size) { int rsize = size; @@ -156,48 +146,57 @@ static char *read_string(void) if (calc_data_size) calc_data_size += size; - str = malloc_or_die(size); - memcpy(str, buf, size); + str = malloc(size); + if (str) + memcpy(str, buf, size); return str; } -static void read_proc_kallsyms(struct pevent *pevent) +static int read_proc_kallsyms(struct pevent *pevent) { unsigned int size; char *buf; size = read4(pevent); if (!size) - return; + return 0; + + buf = malloc(size + 1); + if (buf == NULL) + return -1; - buf = malloc_or_die(size + 1); read_or_die(buf, size); buf[size] = '\0'; parse_proc_kallsyms(pevent, buf, size); free(buf); + return 0; } -static void read_ftrace_printk(struct pevent *pevent) +static int read_ftrace_printk(struct pevent *pevent) { unsigned int size; char *buf; size = read4(pevent); if (!size) - return; + return 0; + + buf = malloc(size); + if (buf == NULL) + return -1; - buf = malloc_or_die(size); read_or_die(buf, size); parse_ftrace_printk(pevent, buf, size); free(buf); + return 0; } -static void read_header_files(struct pevent *pevent) +static int read_header_files(struct pevent *pevent) { unsigned long long size; char *header_event; @@ -222,65 +221,87 @@ static void read_header_files(struct pevent *pevent) die("did not read header event"); size = read8(pevent); - header_event = malloc_or_die(size); + header_event = malloc(size); + if (header_event == NULL) + return -1; + read_or_die(header_event, size); free(header_event); + return 0; } -static void read_ftrace_file(struct pevent *pevent, unsigned long long size) +static int read_ftrace_file(struct pevent *pevent, unsigned long long size) { char *buf; - buf = malloc_or_die(size); + buf = malloc(size); + if (buf == NULL) + return -1; + read_or_die(buf, size); parse_ftrace_file(pevent, buf, size); free(buf); + return 0; } -static void read_event_file(struct pevent *pevent, char *sys, +static int read_event_file(struct pevent *pevent, char *sys, unsigned long long size) { char *buf; - buf = malloc_or_die(size); + buf = malloc(size); + if (buf == NULL) + return -1; + read_or_die(buf, size); parse_event_file(pevent, buf, size, sys); free(buf); + return 0; } -static void read_ftrace_files(struct pevent *pevent) +static int read_ftrace_files(struct pevent *pevent) { unsigned long long size; int count; int i; + int ret; count = read4(pevent); for (i = 0; i < count; i++) { size = read8(pevent); - read_ftrace_file(pevent, size); + ret = read_ftrace_file(pevent, size); + if (ret) + return ret; } + return 0; } -static void read_event_files(struct pevent *pevent) +static int read_event_files(struct pevent *pevent) { unsigned long long size; char *sys; int systems; int count; int i,x; + int ret; systems = read4(pevent); for (i = 0; i < systems; i++) { sys = read_string(); + if (sys == NULL) + return -1; count = read4(pevent); for (x=0; x < count; x++) { size = read8(pevent); - read_event_file(pevent, sys, size); + ret = read_event_file(pevent, sys, size); + if (ret) + return ret; } } + return 0; } ssize_t trace_report(int fd, struct pevent **ppevent, bool __repipe) @@ -293,6 +314,7 @@ ssize_t trace_report(int fd, struct pevent **ppevent, bool __repipe) int show_printk = 0; ssize_t size = -1; struct pevent *pevent; + int err; *ppevent = NULL; @@ -310,6 +332,8 @@ ssize_t trace_report(int fd, struct pevent **ppevent, bool __repipe) die("not a trace file (missing 'tracing' tag)"); version = read_string(); + if (version == NULL) + return -1; if (show_version) printf("version = %s\n", version); free(version); @@ -329,11 +353,21 @@ ssize_t trace_report(int fd, struct pevent **ppevent, bool __repipe) page_size = read4(pevent); - read_header_files(pevent); - read_ftrace_files(pevent); - read_event_files(pevent); - read_proc_kallsyms(pevent); - read_ftrace_printk(pevent); + err = read_header_files(pevent); + if (err) + goto out; + err = read_ftrace_files(pevent); + if (err) + goto out; + err = read_event_files(pevent); + if (err) + goto out; + err = read_proc_kallsyms(pevent); + if (err) + goto out; + err = read_ftrace_printk(pevent); + if (err) + goto out; size = calc_data_size - 1; calc_data_size = 0; |