catalog: fix error codes handling in catalog_list_items

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

diff --git a/src/journal/catalog.c b/src/journal/catalog.c
index 639e2d1b1bef7a6b21438b5dedcdf9921e19ac14..7ae7b3eecf204f5a368420a4ea5f89a5c37e72dd 100644 (file)
--- a/src/journal/catalog.c
+++ b/src/journal/catalog.c
@@ -269,6 +269,8 @@ static int import_file(Hashmap *h, struct strbuf *sb, const char *path) {
         return 0;
 }
 
+#define CATALOG_DATABASE CATALOG_PATH "/database"
+
 int catalog_update(void) {
         _cleanup_strv_free_ char **files = NULL;
         _cleanup_fclose_ FILE *w = NULL;
@@ -294,7 +296,7 @@ int catalog_update(void) {
                 goto finish;
         }
 
-        r = conf_files_list_strv(&files, ".catalog", (const char **) conf_file_dirs);
+        r = conf_files_list_strv(&files, ".catalog", NULL, (const char **) conf_file_dirs);
         if (r < 0) {
                 log_error("Failed to get catalog files: %s", strerror(-r));
                 goto finish;
@@ -309,7 +311,8 @@ int catalog_update(void) {
                 log_info("No items in catalog.");
                 r = 0;
                 goto finish;
-        }
+        } else
+                log_debug("Found %u items in catalog.", hashmap_size(h));
 
         strbuf_complete(sb);
 
@@ -328,11 +331,16 @@ int catalog_update(void) {
         assert(n == hashmap_size(h));
         qsort(items, n, sizeof(CatalogItem), catalog_compare_func);
 
-        mkdir_p("/var/lib/systemd/catalog", 0775);
+        r = mkdir_p(CATALOG_PATH, 0775);
+        if (r < 0) {
+                log_error("Recursive mkdir %s: %s", CATALOG_PATH, strerror(-r));
+                goto finish;
+        }
 
-        r = fopen_temporary("/var/lib/systemd/catalog/database", &w, &p);
+        r = fopen_temporary(CATALOG_DATABASE, &w, &p);
         if (r < 0) {
-                log_error("Failed to open database for writing: %s", strerror(-r));
+                log_error("Failed to open database for writing: %s: %s",
+                          CATALOG_DATABASE, strerror(-r));
                 goto finish;
         }
 
@@ -344,37 +352,40 @@ int catalog_update(void) {
 
         k = fwrite(&header, 1, sizeof(header), w);
         if (k != sizeof(header)) {
-                log_error("Failed to write header.");
+                log_error("%s: failed to write header.", p);
                 goto finish;
         }
 
         k = fwrite(items, 1, n * sizeof(CatalogItem), w);
         if (k != n * sizeof(CatalogItem)) {
-                log_error("Failed to write database.");
+                log_error("%s: failed to write database.", p);
                 goto finish;
         }
 
         k = fwrite(sb->buf, 1, sb->len, w);
         if (k != sb->len) {
-                log_error("Failed to write strings.");
+                log_error("%s: failed to write strings.", p);
                 goto finish;
         }
 
         fflush(w);
 
         if (ferror(w)) {
-                log_error("Failed to write database.");
+                log_error("%s: failed to write database.", p);
                 goto finish;
         }
 
         fchmod(fileno(w), 0644);
 
-        if (rename(p, "/var/lib/systemd/catalog/database") < 0) {
-                log_error("rename() failed: %m");
+        if (rename(p, CATALOG_DATABASE) < 0) {
+                log_error("rename (%s -> %s) failed: %m", p, CATALOG_DATABASE);
                 r = -errno;
                 goto finish;
         }
 
+        log_debug("%s: wrote %u items, with %zu bytes of strings, %ld total size.",
+                 CATALOG_DATABASE, n, sb->len, ftell(w));
+
         free(p);
         p = NULL;
 
@@ -402,7 +413,7 @@ static int open_mmap(int *_fd, struct stat *_st, void **_p) {
         assert(_st);
         assert(_p);
 
-        fd = open("/var/lib/systemd/catalog/database", O_RDONLY|O_CLOEXEC);
+        fd = open(CATALOG_DATABASE, O_RDONLY|O_CLOEXEC);
         if (fd < 0)
                 return -errno;
 
@@ -540,7 +551,23 @@ static char *find_header(const char *s, const char *header) {
         }
 }
 
-int catalog_list(FILE *f) {
+static void dump_catalog_entry(FILE *f, sd_id128_t id, const char *s, bool oneline) {
+        if (oneline) {
+                _cleanup_free_ char *subject = NULL, *defined_by = NULL;
+
+                subject = find_header(s, "Subject:");
+                defined_by = find_header(s, "Defined-By:");
+
+                fprintf(f, SD_ID128_FORMAT_STR " %s: %s\n",
+                        SD_ID128_FORMAT_VAL(id),
+                        strna(defined_by), strna(subject));
+        } else
+                fprintf(f, "-- " SD_ID128_FORMAT_STR "\n%s\n",
+                        SD_ID128_FORMAT_VAL(id), s);
+}
+
+
+int catalog_list(FILE *f, bool oneline) {
         _cleanup_close_ int fd = -1;
         void *p = NULL;
         struct stat st;
@@ -560,17 +587,13 @@ int catalog_list(FILE *f) {
 
         for (n = 0; n < le64toh(h->n_items); n++) {
                 const char *s;
-                _cleanup_free_ char *subject = NULL, *defined_by = NULL;
 
                 if (last_id_set && sd_id128_equal(last_id, items[n].id))
                         continue;
 
                 assert_se(s = find_id(p, items[n].id));
 
-                subject = find_header(s, "Subject:");
-                defined_by = find_header(s, "Defined-By:");
-
-                fprintf(f, SD_ID128_FORMAT_STR " %s: %s\n", SD_ID128_FORMAT_VAL(items[n].id), strna(defined_by), strna(subject));
+                dump_catalog_entry(f, items[n].id, s, oneline);
 
                 last_id_set = true;
                 last_id = items[n].id;
@@ -580,3 +603,37 @@ int catalog_list(FILE *f) {
 
         return 0;
 }
+
+int catalog_list_items(FILE *f, bool oneline, char **items) {
+        char **item;
+        int r = 0;
+
+        STRV_FOREACH(item, items) {
+                sd_id128_t id;
+                int k;
+                char _cleanup_free_ *msg = NULL;
+
+                k = sd_id128_from_string(*item, &id);
+                if (k < 0) {
+                        log_error("Failed to parse id128 '%s': %s",
+                                  *item, strerror(-k));
+                        if (r == 0)
+                                r = k;
+                        continue;
+                }
+
+                k = catalog_get(id, &msg);
+                if (k < 0) {
+                        log_full(k == -ENOENT ? LOG_NOTICE : LOG_ERR,
+                                 "Failed to retrieve catalog entry for '%s': %s",
+                                  *item, strerror(-k));
+                        if (r == 0)
+                                r = k;
+                        continue;
+                }
+
+                dump_catalog_entry(f, id, msg, oneline);
+        }
+
+        return r;
+}