Always check asprintf return code

[elogind.git] / src / journal / journalctl.c

diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index 92e828633458012f88ba9e73faaa56070ecdd911..5a59a3ac83f41ee71c8d1cb84c60d664ec3fe896 100644 (file)
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -699,15 +699,20 @@ static int generate_new_id128(void) {
 
 static int add_matches(sd_journal *j, char **args) {
         char **i;
+        bool have_term = false;
 
         assert(j);
 
         STRV_FOREACH(i, args) {
                 int r;
 
-                if (streq(*i, "+"))
+                if (streq(*i, "+")) {
+                        if (!have_term)
+                                break;
                         r = sd_journal_add_disjunction(j);
-                else if (path_is_absolute(*i)) {
+                        have_term = false;
+
+                } else if (path_is_absolute(*i)) {
                         _cleanup_free_ char *p, *t = NULL, *t2 = NULL;
                         const char *path;
                         _cleanup_free_ char *interpreter = NULL;
@@ -741,11 +746,17 @@ static int add_matches(sd_journal *j, char **args) {
                                         }
                                 } else
                                         t = strappend("_EXE=", path);
-                        } else if (S_ISCHR(st.st_mode))
-                                asprintf(&t, "_KERNEL_DEVICE=c%u:%u", major(st.st_rdev), minor(st.st_rdev));
-                        else if (S_ISBLK(st.st_mode))
-                                asprintf(&t, "_KERNEL_DEVICE=b%u:%u", major(st.st_rdev), minor(st.st_rdev));
-                        else {
+                        } else if (S_ISCHR(st.st_mode)) {
+                                if (asprintf(&t, "_KERNEL_DEVICE=c%u:%u",
+                                             major(st.st_rdev),
+                                             minor(st.st_rdev)) < 0)
+                                        return -ENOMEM;
+                        } else if (S_ISBLK(st.st_mode)) {
+                                if (asprintf(&t, "_KERNEL_DEVICE=b%u:%u",
+                                             major(st.st_rdev),
+                                             minor(st.st_rdev)) < 0)
+                                        return -ENOMEM;
+                        } else {
                                 log_error("File is neither a device node, nor regular file, nor executable: %s", *i);
                                 return -EINVAL;
                         }
@@ -756,8 +767,12 @@ static int add_matches(sd_journal *j, char **args) {
                         r = sd_journal_add_match(j, t, 0);
                         if (t2)
                                 r = sd_journal_add_match(j, t2, 0);
-                } else
+                        have_term = true;
+
+                } else {
                         r = sd_journal_add_match(j, *i, 0);
+                        have_term = true;
+                }
 
                 if (r < 0) {
                         log_error("Failed to add match '%s': %s", *i, strerror(-r));
@@ -765,6 +780,11 @@ static int add_matches(sd_journal *j, char **args) {
                 }
         }
 
+        if (!strv_isempty(args) && !have_term) {
+                log_error("\"+\" can only be used between terms");
+                return -EINVAL;
+        }
+
         return 0;
 }