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-rw-r--r--tools/perf/util/util.c34
1 files changed, 28 insertions, 6 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 988111e0bab5..9e4ea852f636 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -143,13 +143,17 @@ out:
return list;
}
-static int slow_copyfile(const char *from, const char *to)
+static int slow_copyfile(const char *from, const char *to, struct nsinfo *nsi)
{
int err = -1;
char *line = NULL;
size_t n;
- FILE *from_fp = fopen(from, "r"), *to_fp;
+ FILE *from_fp, *to_fp;
+ struct nscookie nsc;
+ nsinfo__mountns_enter(nsi, &nsc);
+ from_fp = fopen(from, "r");
+ nsinfo__mountns_exit(&nsc);
if (from_fp == NULL)
goto out;
@@ -198,15 +202,21 @@ int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size)
return size ? -1 : 0;
}
-int copyfile_mode(const char *from, const char *to, mode_t mode)
+static int copyfile_mode_ns(const char *from, const char *to, mode_t mode,
+ struct nsinfo *nsi)
{
int fromfd, tofd;
struct stat st;
- int err = -1;
+ int err;
char *tmp = NULL, *ptr = NULL;
+ struct nscookie nsc;
- if (stat(from, &st))
+ nsinfo__mountns_enter(nsi, &nsc);
+ err = stat(from, &st);
+ nsinfo__mountns_exit(&nsc);
+ if (err)
goto out;
+ err = -1;
/* extra 'x' at the end is to reserve space for '.' */
if (asprintf(&tmp, "%s.XXXXXXx", to) < 0) {
@@ -227,11 +237,13 @@ int copyfile_mode(const char *from, const char *to, mode_t mode)
goto out_close_to;
if (st.st_size == 0) { /* /proc? do it slowly... */
- err = slow_copyfile(from, tmp);
+ err = slow_copyfile(from, tmp, nsi);
goto out_close_to;
}
+ nsinfo__mountns_enter(nsi, &nsc);
fromfd = open(from, O_RDONLY);
+ nsinfo__mountns_exit(&nsc);
if (fromfd < 0)
goto out_close_to;
@@ -248,6 +260,16 @@ out:
return err;
}
+int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi)
+{
+ return copyfile_mode_ns(from, to, 0755, nsi);
+}
+
+int copyfile_mode(const char *from, const char *to, mode_t mode)
+{
+ return copyfile_mode_ns(from, to, mode, NULL);
+}
+
int copyfile(const char *from, const char *to)
{
return copyfile_mode(from, to, 0755);