diff options
| -rw-r--r-- | util/kconfig/confdata.c | 53 |
1 files changed, 43 insertions, 10 deletions
diff --git a/util/kconfig/confdata.c b/util/kconfig/confdata.c index 79e0b359ea..df39fcc243 100644 --- a/util/kconfig/confdata.c +++ b/util/kconfig/confdata.c @@ -674,6 +674,33 @@ out: return res; } +/* + * Return malloced string the contents of which are a concatenation of the + * directory name of the first argument and the second argument. + */ +static char* get_tmp_file_name(const char* base, const char *tmp_name) +{ + char *file_name, *p; + /* for sure a few bytes longer than needed */ + int file_name_size = strlen(base) + sizeof(file_name) + 10; + + file_name = malloc(file_name_size); + if (!file_name) { + fprintf(stderr, "%s:%d: failed to allocate %d bytes\n", + __FILE__, __LINE__, file_name_size); + return 0; + } + + strcpy(file_name, base); + p = strrchr(file_name, '/'); + if (p) + strcpy(p + 1, tmp_name); + else + strcpy(file_name, tmp_name); + + return file_name; +} + int conf_write_autoconf(void) { struct symbol *sym; @@ -682,10 +709,19 @@ int conf_write_autoconf(void) FILE *out, *out_h; time_t now; int i, l; - char tmpname[128], tmpname_h[128]; + char *tmp_conf, *tmp_conf_h; sym_clear_all_valid(); + name = getenv("KCONFIG_AUTOHEADER"); + if (!name) + name = "include/linux/autoconf.h"; + + tmp_conf = get_tmp_file_name(name, ".tmpconfig"); + tmp_conf_h = get_tmp_file_name(name, ".tmpconfig.h"); + if (!tmp_conf || !tmp_conf_h) + return 1; + file_write_dep("build/auto.conf.cmd"); #if 0 @@ -693,13 +729,11 @@ int conf_write_autoconf(void) return 1; #endif - sprintf(tmpname, ".tmpconfig.%d", (int)getpid()); - out = fopen(tmpname, "w"); + out = fopen(tmp_conf, "w"); if (!out) return 1; - sprintf(tmpname_h, ".tmpconfig.h.%d", (int)getpid()); - out_h = fopen(tmpname_h, "w"); + out_h = fopen(tmp_conf_h, "w"); if (!out_h) { fclose(out); return 1; @@ -790,11 +824,8 @@ int conf_write_autoconf(void) fclose(out); fclose(out_h); - name = getenv("KCONFIG_AUTOHEADER"); - if (!name) - name = "include/linux/autoconf.h"; UNLINK_IF_NECESSARY(name); - if (rename(tmpname_h, name)) + if (rename(tmp_conf_h, name)) return 1; name = getenv("KCONFIG_AUTOCONFIG"); if (!name) @@ -804,9 +835,11 @@ int conf_write_autoconf(void) * and this marks the successful completion of the previous steps. */ UNLINK_IF_NECESSARY(name); - if (rename(tmpname, name)) + if (rename(tmp_conf, name)) return 1; + free(tmp_conf_h); + free(tmp_conf); return 0; } |