dpkg: use nitfields which are a bit closer to typical ushort.
Code size -800.
This commit is contained in:
Denis Vlasenko
parent
87468857f6
commit
334fa9bcb5
127
archival/dpkg.c
127
archival/dpkg.c
@ -53,16 +53,16 @@
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* and available file */
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#define PACKAGE_HASH_PRIME 10007
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typedef struct edge_s {
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unsigned operator:3;
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unsigned operator:4; /* was:3 */
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unsigned type:4;
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unsigned name:14;
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unsigned version:14;
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unsigned name:16; /* was:14 */
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unsigned version:16; /* was:14 */
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} edge_t;
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typedef struct common_node_s {
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unsigned name:14;
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unsigned version:14;
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unsigned num_of_edges:14;
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unsigned name:16; /* was:14 */
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unsigned version:16; /* was:14 */
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unsigned num_of_edges:16; /* was:14 */
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edge_t **edge;
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} common_node_t;
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@ -71,8 +71,8 @@ typedef struct common_node_s {
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* likely to be installed at any one time, so there is a bit of leeway here */
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#define STATUS_HASH_PRIME 8191
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typedef struct status_node_s {
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unsigned package:14; /* has to fit PACKAGE_HASH_PRIME */
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unsigned status:14; /* has to fit STATUS_HASH_PRIME */
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unsigned package:16; /* was:14 */ /* has to fit PACKAGE_HASH_PRIME */
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unsigned status:16; /* was:14 */ /* has to fit STATUS_HASH_PRIME */
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} status_node_t;
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/* Were statically declared here, but such a big bss is nommu-unfriendly */
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@ -107,13 +107,13 @@ enum operator_e {
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typedef struct deb_file_s {
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char *control_file;
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char *filename;
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unsigned package:14;
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unsigned package:16; /* was:14 */
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} deb_file_t;
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static void make_hash(const char *key, unsigned *start, unsigned *decrement, const int hash_prime)
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{
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unsigned long int hash_num = key[0];
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unsigned long hash_num = key[0];
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int len = strlen(key);
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int i;
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@ -472,9 +472,13 @@ static void add_split_dependencies(common_node_t *parent_node, const char *whole
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or_edge->version++;
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add_edge_to_node(parent_node, edge);
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} while ((field2 = strtok_r(NULL, "|", &line_ptr2)) != NULL);
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field2 = strtok_r(NULL, "|", &line_ptr2);
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} while (field2 != NULL);
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free(line2);
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} while ((field = strtok_r(NULL, ",", &line_ptr1)) != NULL);
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field = strtok_r(NULL, ",", &line_ptr1);
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} while (field != NULL);
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free(line);
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}
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@ -579,7 +583,7 @@ static unsigned fill_package_struct(char *control_buffer)
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{
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static const char *const field_names[] = { "Package", "Version",
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"Pre-Depends", "Depends","Replaces", "Provides",
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"Conflicts", "Suggests", "Recommends", "Enhances", 0
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"Conflicts", "Suggests", "Recommends", "Enhances", NULL
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};
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common_node_t *new_node = xzalloc(sizeof(common_node_t));
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@ -705,7 +709,8 @@ static void set_status(const unsigned status_node_num, const char *new_value, co
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free(new_status);
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}
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static const char *describe_status(int status_num) {
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static const char *describe_status(int status_num)
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{
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int status_want, status_state ;
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if (status_hashtable[status_num] == NULL || status_hashtable[status_num]->status == 0)
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return "is not installed or flagged to be installed\n";
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@ -721,7 +726,7 @@ static const char *describe_status(int status_num) {
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if (status_want == search_name_hashtable("purge"))
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return "is marked to be purged";
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}
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if (status_want == search_name_hashtable("unknown"))
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if (status_want == search_name_hashtable("unknown"))
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return "is in an indeterminate state";
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if (status_want == search_name_hashtable("install"))
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return "is marked to be installed";
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@ -793,7 +798,8 @@ static void write_status_file(deb_file_t **deb_file)
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/* Update previously known packages */
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while ((control_buffer = xmalloc_fgets_str(old_status_file, "\n\n")) != NULL) {
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if ((tmp_string = strstr(control_buffer, "Package:")) == NULL) {
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tmp_string = strstr(control_buffer, "Package:");
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if (tmp_string == NULL) {
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continue;
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}
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@ -818,8 +824,9 @@ static void write_status_file(deb_file_t **deb_file)
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if (strcmp(status_from_file, status_from_hashtable) != 0) {
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/* New status isnt exactly the same as old status */
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const int state_status = get_status(status_num, 3);
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if ((strcmp("installed", name_hashtable[state_status]) == 0) ||
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(strcmp("unpacked", name_hashtable[state_status]) == 0)) {
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if ((strcmp("installed", name_hashtable[state_status]) == 0)
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|| (strcmp("unpacked", name_hashtable[state_status]) == 0)
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) {
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/* We need to add the control file from the package */
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i = 0;
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while (deb_file[i] != NULL) {
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@ -884,7 +891,7 @@ static void write_status_file(deb_file_t **deb_file)
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}
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}
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/* If the package from the status file wasnt handle above, do it now*/
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if (! write_flag) {
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if (!write_flag) {
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fprintf(new_status_file, "%s\n\n", control_buffer);
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}
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@ -1065,12 +1072,14 @@ static int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
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const edge_t *package_edge = package_node->edge[j];
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unsigned package_num;
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if (package_edge->type == EDGE_OR_PRE_DEPENDS ||
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package_edge->type == EDGE_OR_DEPENDS) { /* start an EDGE_OR_ list */
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if (package_edge->type == EDGE_OR_PRE_DEPENDS
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|| package_edge->type == EDGE_OR_DEPENDS
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) { /* start an EDGE_OR_ list */
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number_of_alternatives = package_edge->version;
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root_of_alternatives = package_edge;
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continue;
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} else if (number_of_alternatives == 0) { /* not in the middle of an EDGE_OR_ list */
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}
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if (number_of_alternatives == 0) { /* not in the middle of an EDGE_OR_ list */
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number_of_alternatives = 1;
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root_of_alternatives = NULL;
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}
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@ -1120,14 +1129,14 @@ static int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
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name_hashtable[package_node->name],
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package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
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name_hashtable[root_of_alternatives->name]);
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else
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bb_error_msg_and_die(
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"package %s %sdepends on %s, which %s\n",
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name_hashtable[package_node->name],
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package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
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name_hashtable[package_edge->name],
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describe_status(status_num));
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} else if (result == 0 && number_of_alternatives) {
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bb_error_msg_and_die(
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"package %s %sdepends on %s, which %s\n",
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name_hashtable[package_node->name],
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package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
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name_hashtable[package_edge->name],
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describe_status(status_num));
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}
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if (result == 0 && number_of_alternatives) {
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/* we've found a package which
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* satisfies the dependency,
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* so skip over the rest of
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@ -1165,49 +1174,42 @@ static char **create_list(const char *filename)
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if (count == 0) {
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return NULL;
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} else {
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file_list[count] = NULL;
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return file_list;
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}
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file_list[count] = NULL;
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return file_list;
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}
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/* maybe i should try and hook this into remove_file.c somehow */
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static int remove_file_array(char **remove_names, char **exclude_names)
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{
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struct stat path_stat;
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int match_flag;
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int remove_flag = FALSE;
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int i,j;
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int remove_flag = 1; /* not removed anything yet */
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int i, j;
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if (remove_names == NULL) {
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return FALSE;
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return 0;
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}
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for (i = 0; remove_names[i] != NULL; i++) {
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match_flag = FALSE;
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if (exclude_names != NULL) {
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for (j = 0; exclude_names[j] != 0; j++) {
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for (j = 0; exclude_names[j] != NULL; j++) {
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if (strcmp(remove_names[i], exclude_names[j]) == 0) {
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match_flag = TRUE;
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break;
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goto skip;
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}
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}
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}
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if (!match_flag) {
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if (lstat(remove_names[i], &path_stat) < 0) {
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continue;
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}
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if (S_ISDIR(path_stat.st_mode)) {
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if (rmdir(remove_names[i]) != -1) {
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remove_flag = TRUE;
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}
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} else {
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if (unlink(remove_names[i]) != -1) {
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remove_flag = TRUE;
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}
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}
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/* TODO: why we are checking lstat? we can just try rm/rmdir */
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if (lstat(remove_names[i], &path_stat) < 0) {
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continue;
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}
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if (S_ISDIR(path_stat.st_mode)) {
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remove_flag &= rmdir(remove_names[i]); /* 0 if no error */
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} else {
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remove_flag &= unlink(remove_names[i]); /* 0 if no error */
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}
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skip:
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continue;
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}
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return remove_flag;
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return (remove_flag == 0);
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}
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static int run_package_script(const char *package_name, const char *script_type)
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@ -1224,8 +1226,11 @@ static int run_package_script(const char *package_name, const char *script_type)
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return result;
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}
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static const char *all_control_files[] = {"preinst", "postinst", "prerm", "postrm",
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"list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL };
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static const char *all_control_files[] = {
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"preinst", "postinst", "prerm", "postrm",
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"list", "md5sums", "shlibs", "conffiles",
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"config", "templates", NULL
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};
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static char **all_control_list(const char *package_name)
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{
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@ -1244,7 +1249,6 @@ static char **all_control_list(const char *package_name)
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static void free_array(char **array)
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{
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if (array) {
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unsigned i = 0;
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while (array[i]) {
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@ -1267,8 +1271,7 @@ static void list_packages(void)
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puts("+++-==============-==============");
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/* go through status hash, dereference package hash and finally strings */
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for (i=0; i<STATUS_HASH_PRIME+1; i++) {
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for (i = 0; i < STATUS_HASH_PRIME+1; i++) {
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if (status_hashtable[i]) {
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const char *stat_str; /* status string */
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const char *name_str; /* package name */
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@ -1285,7 +1288,7 @@ static void list_packages(void)
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s1 = stat_str[0] == 'i' ? 'i' : 'r';
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/* get abbreviation for status field 2 */
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for (j=0, spccnt=0; stat_str[j] && spccnt<2; j++) {
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for (j = 0, spccnt = 0; stat_str[j] && spccnt < 2; j++) {
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if (stat_str[j] == ' ') spccnt++;
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}
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s2 = stat_str[j];
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@ -1293,7 +1296,7 @@ static void list_packages(void)
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/* print out the line formatted like Debian dpkg */
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printf("%c%c %-14s %s\n", s1, s2, name_str, vers_str);
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}
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}
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}
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}
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static void remove_package(const unsigned package_num, int noisy)
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