diff options
Diffstat (limited to 'tools/perf/util/help-unknown-cmd.c')
| -rw-r--r-- | tools/perf/util/help-unknown-cmd.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/tools/perf/util/help-unknown-cmd.c b/tools/perf/util/help-unknown-cmd.c index 43a98a4dc..d62ccaeea 100644 --- a/tools/perf/util/help-unknown-cmd.c +++ b/tools/perf/util/help-unknown-cmd.c @@ -27,16 +27,27 @@ static int levenshtein_compare(const void *p1, const void *p2) return l1 != l2 ? l1 - l2 : strcmp(s1, s2); } -static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old) +static int add_cmd_list(struct cmdnames *cmds, struct cmdnames *old) { - unsigned int i; - - ALLOC_GROW(cmds->names, cmds->cnt + old->cnt, cmds->alloc); - + unsigned int i, nr = cmds->cnt + old->cnt; + void *tmp; + + if (nr > cmds->alloc) { + /* Choose bigger one to alloc */ + if (alloc_nr(cmds->alloc) < nr) + cmds->alloc = nr; + else + cmds->alloc = alloc_nr(cmds->alloc); + tmp = realloc(cmds->names, cmds->alloc * sizeof(*cmds->names)); + if (!tmp) + return -1; + cmds->names = tmp; + } for (i = 0; i < old->cnt; i++) cmds->names[cmds->cnt++] = old->names[i]; zfree(&old->names); old->cnt = 0; + return 0; } const char *help_unknown_cmd(const char *cmd) @@ -52,8 +63,11 @@ const char *help_unknown_cmd(const char *cmd) load_command_list("perf-", &main_cmds, &other_cmds); - add_cmd_list(&main_cmds, &aliases); - add_cmd_list(&main_cmds, &other_cmds); + if (add_cmd_list(&main_cmds, &aliases) < 0 || + add_cmd_list(&main_cmds, &other_cmds) < 0) { + fprintf(stderr, "ERROR: Failed to allocate command list for unknown command.\n"); + goto end; + } qsort(main_cmds.names, main_cmds.cnt, sizeof(main_cmds.names), cmdname_compare); uniq(&main_cmds); @@ -99,6 +113,6 @@ const char *help_unknown_cmd(const char *cmd) for (i = 0; i < n; i++) fprintf(stderr, "\t%s\n", main_cmds.names[i]->name); } - +end: exit(1); } |