[LTP] [PATCH v1] lib/safe_file_ops.c: Fix resource leak

[Bogdan Lezhepekov]

safe_file_scanf and safe_file_vprintf suffered
from resource leak, as opened file descriptor
was not closed in case of error.

Signed-off-by: Bogdan Lezhepekov <bogdan.lezhepekov@suse.com>
---
 lib/safe_file_ops.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/lib/safe_file_ops.c b/lib/safe_file_ops.c
index f803691d8..d7231df4d 100644
--- a/lib/safe_file_ops.c
+++ b/lib/safe_file_ops.c
@@ -130,7 +130,7 @@ void safe_file_scanf(const char *file, const int lineno,
        if (f == NULL) {
                tst_brkm_(file, lineno, TBROK | TERRNO, cleanup_fn,
                        "Failed to open FILE '%s' for reading", path);
-               return;
+               goto out;
        }
 
        exp_convs = tst_count_scanf_conversions(fmt);
@@ -142,14 +142,14 @@ void safe_file_scanf(const char *file, const int lineno,
        if (ret == EOF) {
                tst_brkm_(file, lineno, TBROK, cleanup_fn,
                        "The FILE '%s' ended prematurely", path);
-               return;
+               goto out;
        }
 
        if (ret != exp_convs) {
                tst_brkm_(file, lineno, TBROK, cleanup_fn,
                        "Expected %i conversions got %i FILE '%s'",
                        exp_convs, ret, path);
-               return;
+               goto out;
        }
 
        if (fclose(f)) {
@@ -157,6 +157,8 @@ void safe_file_scanf(const char *file, const int lineno,
                        "Failed to close FILE '%s'", path);
                return;
        }
+out:
+       fclose(f);
 }
 
 
@@ -261,13 +263,13 @@ static void safe_file_vprintf(const char *file, const int lineno,
        if (f == NULL) {
                tst_brkm_(file, lineno, TBROK | TERRNO, cleanup_fn,
                        "Failed to open FILE '%s' for writing", path);
-               return;
+               goto out;
        }
 
        if (vfprintf(f, fmt, va) < 0) {
                tst_brkm_(file, lineno, TBROK, cleanup_fn,
                        "Failed to print to FILE '%s'", path);
-               return;
+               goto out;
        }
 
        if (fclose(f)) {
@@ -275,6 +277,8 @@ static void safe_file_vprintf(const char *file, const int lineno,
                        "Failed to close FILE '%s'", path);
                return;
        }
+out:
+       fclose(f);
 }
 
 void safe_file_printf(const char *file, const int lineno,
-- 
2.35.1