[pulseaudio-discuss] [PATCH 1/2] Get rid of some warnings: -Wunused-result

[Maarten Bosmans]

modules/module-default-device-restore.c: In function ‘load’:
modules/module-default-device-restore.c:67: warning: ignoring return value of ‘fgets’,
declared with attribute warn_unused_result [-Wunused-result]
modules/module-default-device-restore.c:88: warning: ignoring return value of ‘fgets’,
declared with attribute warn_unused_result [-Wunused-result]

pulsecore/authkey.c: In function ‘generate’:
pulsecore/authkey.c:58: warning: ignoring return value of ‘ftruncate’,
declared with attribute warn_unused_result [-Wunused-result]

pulsecore/core-util.c: In function ‘pa_make_secure_dir’:
pulsecore/core-util.c:261: warning: ignoring return value of ‘fchown’,
declared with attribute warn_unused_result [-Wunused-result]
---
 src/modules/module-default-device-restore.c |    8 ++++----
 src/pulsecore/authkey.c                     |    5 ++++-
 src/pulsecore/core-util.c                   |    7 ++++---
 3 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/src/modules/module-default-device-restore.c b/src/modules/module-default-device-restore.c
index 94f589e..90f1149 100644
--- a/src/modules/module-default-device-restore.c
+++ b/src/modules/module-default-device-restore.c
@@ -64,8 +64,8 @@ static void load(struct userdata *u) {
         char ln[256] = "";
         pa_sink *s;
 
-        (void) fgets(ln, sizeof(ln)-1, f);
-        pa_strip_nl(ln);
+        if(fgets(ln, sizeof(ln)-1, f))
+            pa_strip_nl(ln);
         fclose(f);
 
         if (!ln[0])
@@ -85,8 +85,8 @@ static void load(struct userdata *u) {
         char ln[256] = "";
         pa_source *s;
 
-        (void) fgets(ln, sizeof(ln)-1, f);
-        pa_strip_nl(ln);
+        if (fgets(ln, sizeof(ln)-1, f))
+            pa_strip_nl(ln);
         fclose(f);
 
         if (!ln[0])
diff --git a/src/pulsecore/authkey.c b/src/pulsecore/authkey.c
index 92509d8..a590a65 100644
--- a/src/pulsecore/authkey.c
+++ b/src/pulsecore/authkey.c
@@ -55,7 +55,10 @@ static int generate(int fd, void *ret_data, size_t length) {
     pa_random(ret_data, length);
 
     lseek(fd, (off_t) 0, SEEK_SET);
-    (void) ftruncate(fd, (off_t) 0);
+    if (ftruncate(fd, (off_t) 0) < 0) {
+        pa_log("Failed to truncate cookie file: %s", pa_cstrerror(errno));
+        return -1;
+    }
 
     if ((r = pa_loop_write(fd, ret_data, length, NULL)) < 0 || (size_t) r != length) {
         pa_log("Failed to write cookie file: %s", pa_cstrerror(errno));
diff --git a/src/pulsecore/core-util.c b/src/pulsecore/core-util.c
index a713cae..8ff9995 100644
--- a/src/pulsecore/core-util.c
+++ b/src/pulsecore/core-util.c
@@ -254,11 +254,12 @@ int pa_make_secure_dir(const char* dir, mode_t m, uid_t uid, gid_t gid) {
     }
 
 #ifdef HAVE_FCHOWN
-    if (uid == (uid_t)-1)
+    if (uid == (uid_t) -1)
         uid = getuid();
-    if (gid == (gid_t)-1)
+    if (gid == (gid_t) -1)
         gid = getgid();
-    (void) fchown(fd, uid, gid);
+    if (fchown(fd, uid, gid) < 0)
+        goto fail;
 #endif
 
 #ifdef HAVE_FCHMOD
-- 
1.7.1