qga: make build_fs_mount_list() return a bool

Change build_fs_mount_list() to return bool, in accordance
with the guidance under = Rules = in include/qapi/error.h

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Suggested-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220525144140.591926-10-marcandre.lureau@redhat.com>

diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 00472452736b573833d9f89214aefdf0b0a492aa..0469dc409d4377086331c39f18780ce43555b49a 100644 (file)
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -673,7 +673,7 @@ static int dev_major_minor(const char *devpath,
 /*
  * Walk the mount table and build a list of local file systems
  */
-static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp)
+static bool build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp)
 {
     struct mntent *ment;
     FsMount *mount;
@@ -684,7 +684,7 @@ static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp)
     fp = setmntent(mtab, "r");
     if (!fp) {
         error_setg(errp, "failed to open mtab file: '%s'", mtab);
-        return;
+        return false;
     }
 
     while ((ment = getmntent(fp))) {
@@ -714,6 +714,7 @@ static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp)
     }
 
     endmntent(fp);
+    return true;
 }
 
 static void decode_mntname(char *name, int len)
@@ -738,7 +739,7 @@ static void decode_mntname(char *name, int len)
     }
 }
 
-static void build_fs_mount_list(FsMountList *mounts, Error **errp)
+static bool build_fs_mount_list(FsMountList *mounts, Error **errp)
 {
     FsMount *mount;
     char const *mountinfo = "/proc/self/mountinfo";
@@ -751,8 +752,7 @@ static void build_fs_mount_list(FsMountList *mounts, Error **errp)
 
     fp = fopen(mountinfo, "r");
     if (!fp) {
-        build_fs_mount_list_from_mtab(mounts, errp);
-        return;
+        return build_fs_mount_list_from_mtab(mounts, errp);
     }
 
     while (getline(&line, &n, fp) != -1) {
@@ -794,6 +794,7 @@ static void build_fs_mount_list(FsMountList *mounts, Error **errp)
     free(line);
 
     fclose(fp);
+    return true;
 }
 #endif
 
@@ -1592,8 +1593,7 @@ GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
     Error *local_err = NULL;
 
     QTAILQ_INIT(&mounts);
-    build_fs_mount_list(&mounts, &local_err);
-    if (local_err) {
+    if (!build_fs_mount_list(&mounts, &local_err)) {
         error_propagate(errp, local_err);
         return NULL;
     }
@@ -1716,8 +1716,7 @@ int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
     }
 
     QTAILQ_INIT(&mounts);
-    build_fs_mount_list(&mounts, &local_err);
-    if (local_err) {
+    if (!build_fs_mount_list(&mounts, &local_err)) {
         error_propagate(errp, local_err);
         return -1;
     }
@@ -1798,8 +1797,7 @@ int64_t qmp_guest_fsfreeze_thaw(Error **errp)
     Error *local_err = NULL;
 
     QTAILQ_INIT(&mounts);
-    build_fs_mount_list(&mounts, &local_err);
-    if (local_err) {
+    if (!build_fs_mount_list(&mounts, &local_err)) {
         error_propagate(errp, local_err);
         return 0;
     }
@@ -1872,15 +1870,12 @@ qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
     FsMountList mounts;
     struct FsMount *mount;
     int fd;
-    Error *local_err = NULL;
     struct fstrim_range r;
 
     slog("guest-fstrim called");
 
     QTAILQ_INIT(&mounts);
-    build_fs_mount_list(&mounts, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
+    if (!build_fs_mount_list(&mounts, errp)) {
         return NULL;
     }