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c87339d58

Denis Vlasenko
Denis Vlasenko
2008-06-21
FAILED Duration: 18s

Subject

dpkg: trivial code shrinkage, and redo G trick correctly.

Binary

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Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04.3) 11.4.0

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Build Log

(log yok)

Commit Diff GitHub →

archival/dpkg.c +35 -37
archival/dpkg.c+35 -37
@@ -75,10 +75,21 @@ typedef struct status_node_s {
unsigned status:16; /* was:14 */ /* has to fit STATUS_HASH_PRIME */
} status_node_t;
-/* Were statically declared here, but such a big bss is nommu-unfriendly */
-static char **name_hashtable; /* [NAME_HASH_PRIME + 1] */
-static common_node_t **package_hashtable; /* [PACKAGE_HASH_PRIME + 1] */
-static status_node_t **status_hashtable; /* [STATUS_HASH_PRIME + 1] */
+
+/* Globals */
+struct globals {
+ char *name_hashtable[NAME_HASH_PRIME + 1];
+ common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
+ status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
+};
+#define G (*ptr_to_globals)
+#define name_hashtable (G.name_hashtable )
+#define package_hashtable (G.package_hashtable)
+#define status_hashtable (G.status_hashtable )
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+} while (0)
+
/* Even numbers are for 'extras', like ored dependencies or null */
enum edge_type_e {
@@ -312,7 +323,6 @@ static int test_version(const unsigned version1, const unsigned version2, const
return FALSE;
}
-
static int search_package_hashtable(const unsigned name, const unsigned version, const unsigned operator)
{
unsigned probe_address;
@@ -731,7 +741,6 @@ static const char *describe_status(int status_num)
return "is not installed or flagged to be installed";
}
-
static void index_status_file(const char *filename)
{
FILE *status_file;
@@ -1203,25 +1212,25 @@ static int remove_file_array(char **remove_names, char **exclude_names)
return (remove_flag == 0);
}
-static int run_package_script(const char *package_name, const char *script_type)
+static void run_package_script_or_die(const char *package_name, const char *script_type)
{
- struct stat path_stat;
char *script_path;
int result;
script_path = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, script_type);
- /* If the file doesnt exist is isnt a fatal */
- result = lstat(script_path, &path_stat) < 0 ? EXIT_SUCCESS : system(script_path);
+ /* If the file doesnt exist is isnt fatal */
+ result = access(script_path, F_OK) ? EXIT_SUCCESS : system(script_path);
free(script_path);
- return result;
+ if (result)
+ bb_error_msg_and_die("%s failed, exit code %d", script_type, result);
}
/*
The policy manual defines what scripts get called when and with
what arguments. I realize that busybox does not support all of
these scenarios, but it does support some of them; it does not,
-however, run them with any parameters in run_package_script().
+however, run them with any parameters in run_package_script_or_die().
Here are the scripts:
preinst install
@@ -1335,10 +1344,8 @@ static void remove_package(const unsigned package_num, int noisy)
if (noisy)
printf("Removing %s (%s)...\n", package_name, package_version);
- /* run prerm script */
- if (run_package_script(package_name, "prerm") != 0) {
- bb_error_msg_and_die("script failed, prerm failure");
- }
+ /* Run prerm script */
+ run_package_script_or_die(package_name, "prerm");
/* Create a list of files to remove, and a separate list of those to keep */
sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list");
@@ -1348,7 +1355,8 @@ static void remove_package(const unsigned package_num, int noisy)
exclude_files = create_list(conffile_name);
/* Some directories can't be removed straight away, so do multiple passes */
- while (remove_file_array(remove_files, exclude_files)) /*repeat */;
+ while (remove_file_array(remove_files, exclude_files))
+ continue;
free_array(exclude_files);
free_array(remove_files);
@@ -1384,10 +1392,8 @@ static void purge_package(const unsigned package_num)
printf("Purging %s (%s)...\n", package_name, package_version);
- /* run prerm script */
- if (run_package_script(package_name, "prerm") != 0) {
- bb_error_msg_and_die("script failed, prerm failure");
- }
+ /* Run prerm script */
+ run_package_script_or_die(package_name, "prerm");
/* Create a list of files to remove */
sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list");
@@ -1405,10 +1411,8 @@ static void purge_package(const unsigned package_num)
free_array(remove_files);
free(exclude_files);
- /* run postrm script */
- if (run_package_script(package_name, "postrm") != 0) {
- bb_error_msg_and_die("postrm failure.. set status to what?");
- }
+ /* Run postrm script */
+ run_package_script_or_die(package_name, "postrm");
/* Change package status */
set_status(status_num, "not-installed", 3);
@@ -1532,10 +1536,7 @@ static void unpack_package(deb_file_t *deb_file)
unpack_ar_archive(archive_handle);
/* Run the preinst prior to extracting */
- if (run_package_script(package_name, "preinst") != 0) {
- /* when preinst returns exit code != 0 then quit installation process */
- bb_error_msg_and_die("subprocess pre-installation script returned error");
- }
+ run_package_script_or_die(package_name, "preinst");
/* Extract data.tar.gz to the root directory */
archive_handle = init_archive_deb_ar(deb_file->filename);
@@ -1573,10 +1574,9 @@ static void configure_package(deb_file_t *deb_file)
printf("Setting up %s (%s)...\n", package_name, package_version);
/* Run the postinst script */
- if (run_package_script(package_name, "postinst") != 0) {
- /* TODO: handle failure gracefully */
- bb_error_msg_and_die("postinst failure.. set status to what?");
- }
+ /* TODO: handle failure gracefully */
+ run_package_script_or_die(package_name, "postinst");
+
/* Change status to reflect success */
set_status(status_num, "install", 1);
set_status(status_num, "installed", 3);
@@ -1604,6 +1604,8 @@ int dpkg_main(int argc ATTRIBUTE_UNUSED, char **argv)
OPT_unpack = 0x40,
};
+ INIT_G();
+
opt = getopt32(argv, "CF:ilPru", &str_f);
//if (opt & OPT_configure) ... // -C
if (opt & OPT_force_ignore_depends) { // -F (--force in official dpkg)
@@ -1620,10 +1622,6 @@ int dpkg_main(int argc ATTRIBUTE_UNUSED, char **argv)
if (!opt || (!argv[0] && !(opt && OPT_list_installed)))
bb_show_usage();
- name_hashtable = xzalloc(sizeof(name_hashtable[0]) * (NAME_HASH_PRIME + 1));
- package_hashtable = xzalloc(sizeof(package_hashtable[0]) * (PACKAGE_HASH_PRIME + 1));
- status_hashtable = xzalloc(sizeof(status_hashtable[0]) * (STATUS_HASH_PRIME + 1));
-
/* puts("(Reading database ... xxxxx files and directories installed.)"); */
index_status_file("/var/lib/dpkg/status");