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-rw-r--r--tools/perf/util/util.c66
1 files changed, 59 insertions, 7 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 6d17b18e915d..28a0a89c1f73 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -1,7 +1,7 @@
#include "../perf.h"
#include "util.h"
#include <sys/mman.h>
-#ifdef BACKTRACE_SUPPORT
+#ifdef HAVE_BACKTRACE_SUPPORT
#include <execinfo.h>
#endif
#include <stdio.h>
@@ -55,17 +55,20 @@ int mkdir_p(char *path, mode_t mode)
return (stat(path, &st) && mkdir(path, mode)) ? -1 : 0;
}
-static int slow_copyfile(const char *from, const char *to)
+static int slow_copyfile(const char *from, const char *to, mode_t mode)
{
- int err = 0;
+ int err = -1;
char *line = NULL;
size_t n;
FILE *from_fp = fopen(from, "r"), *to_fp;
+ mode_t old_umask;
if (from_fp == NULL)
goto out;
+ old_umask = umask(mode ^ 0777);
to_fp = fopen(to, "w");
+ umask(old_umask);
if (to_fp == NULL)
goto out_fclose_from;
@@ -82,7 +85,7 @@ out:
return err;
}
-int copyfile(const char *from, const char *to)
+int copyfile_mode(const char *from, const char *to, mode_t mode)
{
int fromfd, tofd;
struct stat st;
@@ -93,13 +96,13 @@ int copyfile(const char *from, const char *to)
goto out;
if (st.st_size == 0) /* /proc? do it slowly... */
- return slow_copyfile(from, to);
+ return slow_copyfile(from, to, mode);
fromfd = open(from, O_RDONLY);
if (fromfd < 0)
goto out;
- tofd = creat(to, 0755);
+ tofd = creat(to, mode);
if (tofd < 0)
goto out_close_from;
@@ -121,6 +124,11 @@ out:
return err;
}
+int copyfile(const char *from, const char *to)
+{
+ return copyfile_mode(from, to, 0755);
+}
+
unsigned long convert_unit(unsigned long value, char *unit)
{
*unit = ' ';
@@ -204,7 +212,7 @@ int hex2u64(const char *ptr, u64 *long_val)
}
/* Obtain a backtrace and print it to stdout. */
-#ifdef BACKTRACE_SUPPORT
+#ifdef HAVE_BACKTRACE_SUPPORT
void dump_stack(void)
{
void *array[16];
@@ -361,3 +369,47 @@ int parse_nsec_time(const char *str, u64 *ptime)
*ptime = time_sec * NSEC_PER_SEC + time_nsec;
return 0;
}
+
+unsigned long parse_tag_value(const char *str, struct parse_tag *tags)
+{
+ struct parse_tag *i = tags;
+
+ while (i->tag) {
+ char *s;
+
+ s = strchr(str, i->tag);
+ if (s) {
+ unsigned long int value;
+ char *endptr;
+
+ value = strtoul(str, &endptr, 10);
+ if (s != endptr)
+ break;
+
+ if (value > ULONG_MAX / i->mult)
+ break;
+ value *= i->mult;
+ return value;
+ }
+ i++;
+ }
+
+ return (unsigned long) -1;
+}
+
+int filename__read_int(const char *filename, int *value)
+{
+ char line[64];
+ int fd = open(filename, O_RDONLY), err = -1;
+
+ if (fd < 0)
+ return -1;
+
+ if (read(fd, line, sizeof(line)) > 0) {
+ *value = atoi(line);
+ err = 0;
+ }
+
+ close(fd);
+ return err;
+}