* Licensed under the GPL v2. For licencing details see COPYING.
*/
-/** \file select.c The select mode of adu. */
+/** \file select.c \brief The select mode of adu. */
#include <dirent.h> /* readdir() */
+#include <sys/types.h>
+#include <regex.h>
+
#include "format.h"
#include "adu.h"
#include "gcc-compat.h"
#include "fd.h"
#include "string.h"
#include "error.h"
-#include "portable_io.h"
+#include "user.h"
+#include "select.cmdline.h"
+/** \cond */
/* global list */
#define GLOBAL_LIST_ATOMS \
ATOM(size, SIZE) \
enum user_list_atoms {USER_LIST_ATOMS};
#undef ATOM
+/* user list header */
+#define USER_LIST_HEADER_ATOMS \
+ ATOM(pw_name, STRING) \
+ ATOM(uid, ID)
+
+#define ATOM(x, y) { .name = #x, .type = AT_ ## y},
+struct atom user_list_header_atoms[] = {
+ USER_LIST_HEADER_ATOMS
+ {.name = NULL}
+};
+#undef ATOM
+#define ATOM(x, y) ulha_ ## x,
+enum user_list_header_atoms {USER_LIST_HEADER_ATOMS};
+#undef ATOM
+
/* user summary */
#define USER_SUMMARY_ATOMS \
ATOM(pw_name, STRING) \
enum user_summary_atoms {USER_SUMMARY_ATOMS};
#undef ATOM
+/** \endcond */
+
struct global_list_info {
uint32_t count;
int ret;
int osl_errno;
struct format_info *fi;
+ regex_t *preg;
+ int inverse_matching;
};
struct global_summary_info {
uint64_t num_files;
/** Global bytes count. */
uint64_t num_bytes;
+ regex_t *preg;
+ int inverse_matching;
int ret;
int osl_errno;
};
uint32_t count;
struct user_info *ui;
struct format_info *fi;
+ regex_t *preg;
+ int inverse_matching;
int ret;
int osl_errno;
};
+struct user_list_format_info {
+ struct format_info *fi;
+ struct format_info *header_fi;
+};
+
struct user_summary_info {
struct user_info *ui;
int ret;
int osl_errno;
+ regex_t *preg;
+ int inverse_matching;
};
+struct user_summary_line_info {
+ struct format_info *fi;
+ uint32_t count;
+};
static FILE *output_file;
return 1;
}
+static void free_regex(regex_t *preg)
+{
+ if (!preg)
+ return;
+ regfree(preg);
+ free(preg);
+}
+
+static int compile_regex(regex_t **preg, int *invert)
+{
+ int ret;
+ size_t size;
+ char *buf, *p = select_conf.pattern_arg;
+
+ if (!select_conf.pattern_given || !p[0]) {
+ *preg = NULL;
+ return 0;
+ }
+ if (p[0] == '!') {
+ if (!p[1]) {
+ *preg = NULL;
+ return -E_REGEX;
+ }
+ *invert = 1;
+ p++;
+ } else
+ *invert = 0;
+ *preg = adu_malloc(sizeof(regex_t));
+ ret = regcomp(*preg, p, 0);
+ if (!ret)
+ return 1;
+ size = regerror(ret, *preg, NULL, 0);
+ buf = adu_malloc(size);
+ regerror(ret, *preg, buf, size);
+ ERROR_LOG("%s\n", buf);
+ free(buf);
+ free_regex(*preg);
+ *preg = NULL;
+ return -E_REGEX;
+}
+
+static int dir_is_admissible(char *dirname, regex_t *preg, int inverse_matching)
+{
+ int ret;
+
+ if (!preg)
+ return 1;
+ ret = regexec(preg, dirname, 0, NULL, 0);
+ if (ret == REG_NOMATCH && !inverse_matching)
+ return 0;
+ if (ret != REG_NOMATCH && inverse_matching)
+ return 0;
+ return 1;
+}
+
static int check_loop_return(int ret, int loop_ret, int loop_osl_errno)
{
if (ret >= 0)
int ret;
uint64_t num;
+ if (gsi->preg) {
+ char *dirname;
+ ret = get_dir_name_of_row(row, &dirname);
+ if (ret < 0)
+ goto err;
+ ret = dir_is_admissible(dirname, gsi->preg, gsi->inverse_matching);
+ free(dirname);
+ if (!ret)
+ return 1;
+ }
+
ret = get_num_files_of_row(row, &num);
if (ret < 0)
goto err;
err:
gsi->ret = ret;
gsi->osl_errno = (ret == -E_OSL)? osl_errno : 0;
- return -1;
+ return ret;
}
static int print_global_summary(struct format_info *fi)
int ret;
char *buf;
struct global_summary_info gsi = {.num_dirs = 0};
+ char *header = select_conf.header_given? select_conf.header_arg :
+ "Global summary\n";
union atom_value values[] = {
[gsa_dirs] = {.num_value = 0ULL},
[gsa_size] = {.num_value = 0ULL}
};
+ ret = compile_regex(&gsi.preg, &gsi.inverse_matching);
+ if (ret < 0)
+ return ret;
ret = adu_loop_reverse(dir_table, DT_BYTES, &gsi,
global_summary_loop_function, &gsi.ret, &gsi.osl_errno);
+ free_regex(gsi.preg);
if (ret < 0)
return ret;
values[gsa_dirs].num_value = (long long unsigned)gsi.num_dirs;
values[gsa_files].num_value = (long long unsigned)gsi.num_files;
values[gsa_size].num_value = (long long unsigned)gsi.num_bytes;
- if (!select_conf.no_headers_given) {
- ret = output("Global summary\n");
- if (ret < 0)
- return ret;
- }
+
+ ret = output("%s", header);
+ if (ret < 0)
+ return ret;
buf = format_items(fi, values);
ret = output("%s", buf);
free(buf);
uint64_t num;
int ret;
+ if (usi->preg) {
+ char *dirname;
+ ret = get_dir_name_of_row(row, &dirname);
+ if (ret < 0)
+ goto err;
+ ret = dir_is_admissible(dirname, usi->preg, usi->inverse_matching);
+ free(dirname);
+ if (!ret)
+ return 1;
+ }
ret = get_num_user_files(row, usi->ui, &num);
if (ret < 0)
goto err;
err:
usi->ret = ret;
usi->osl_errno = (ret == -E_OSL)? osl_errno : 0;
- return -1;
+ return ret;
}
static int compute_user_summary(struct user_info *ui, __a_unused void *data)
{
struct user_summary_info usi = {.ui = ui};
+ int ret = compile_regex(&usi.preg, &usi.inverse_matching);
- return adu_loop_reverse(ui->table, UT_BYTES, &usi, user_summary_loop_function,
+ if (ret < 0)
+ return ret;
+ ret = adu_loop_reverse(ui->table, UT_BYTES, &usi, user_summary_loop_function,
&usi.ret, &usi.osl_errno);
+ free_regex(usi.preg);
+ return ret;
}
static int print_user_summary_line(struct user_info *ui, void *data)
{
- struct format_info *fi = data;
+ struct user_summary_line_info *usli = data;
union atom_value values[] = {
[usa_pw_name] = {.string_value = ui->pw_name?
ui->pw_name : "?"},
[usa_size] = {.num_value = (long long unsigned)ui->bytes}
};
char *buf;
- int ret;
+ int ret = -E_LOOP_COMPLETE;
- buf = format_items(fi, values);
+ if (!usli->count)
+ return ret;
+
+ buf = format_items(usli->fi, values);
ret = output("%s", buf);
free(buf);
+ usli->count--;
return ret;
}
-static int name_comp(const void *a, const void *b)
+static int name_comp(struct user_info *a, struct user_info *b)
{
- char *x = ((struct user_info *)a)->pw_name;
- char *y = ((struct user_info *)b)->pw_name;
+ char *x = a->pw_name;
+ char *y = b->pw_name;
if (!x)
return 1;
return strcmp(x, y);
}
-static int uid_comp(const void *a, const void *b)
+static int uid_comp(struct user_info *a, struct user_info *b)
{
- return -NUM_COMPARE(((struct user_info *)a)->uid,
- ((struct user_info *)b)->uid);
+ return -NUM_COMPARE(a->uid, b->uid);
}
-static int dir_count_comp(const void *a, const void *b)
+static int dir_count_comp(struct user_info *a, struct user_info *b)
{
- return NUM_COMPARE(((struct user_info *)a)->dirs,
- ((struct user_info *)b)->dirs);
+ return NUM_COMPARE(a->dirs, b->dirs);
}
-static int file_count_comp(const void *a, const void *b)
+static int file_count_comp(struct user_info *a, struct user_info *b)
{
- return NUM_COMPARE(((struct user_info *)a)->files,
- ((struct user_info *)b)->files);
+ return NUM_COMPARE(a->files, b->files);
}
-static int size_comp(const void *a, const void *b)
+static int size_comp(struct user_info *a, struct user_info *b)
{
- return NUM_COMPARE(((struct user_info *)a)->bytes,
- ((struct user_info *)b)->bytes);
+ return NUM_COMPARE(a->bytes, b->bytes);
}
static int print_user_summary(struct format_info *fi)
{
- /*
- * The comparators for sorting the user summary.
- *
- * This is an array of pointers to functions taking two constant void *
- * pointers and returning an int.
- */
- static int (*summary_comparators[])(const void *, const void *) = {
- [user_summary_sort_arg_name] = name_comp,
- [user_summary_sort_arg_uid] = uid_comp,
- [user_summary_sort_arg_dir_count] = dir_count_comp,
- [user_summary_sort_arg_file_count] = file_count_comp,
- [user_summary_sort_arg_size] = size_comp,
+ int ret;
+ int (*comp)(struct user_info *a, struct user_info *b);
+ struct user_summary_line_info usli = {
+ .fi = fi,
+ .count = select_conf.limit_arg
};
+ char *header = select_conf.header_given? select_conf.header_arg :
+ "User summary\n";
- if (!select_conf.no_headers_given) {
- int ret = output("User summary\n");
- if (ret < 0)
- return ret;
- }
- int ret = for_each_admissible_user(compute_user_summary, fi);
+ ret = output("%s", header);
+ if (ret < 0)
+ return ret;
+ ret = for_each_admissible_user(compute_user_summary, NULL);
if (ret < 0)
return ret;
- sort_hash_table(summary_comparators[select_conf.user_summary_sort_arg]);
- return for_each_admissible_user(print_user_summary_line, fi);
+ switch (select_conf.user_summary_sort_arg) {
+ case user_summary_sort_arg_name:
+ comp = name_comp;
+ break;
+ case user_summary_sort_arg_uid:
+ comp = uid_comp;
+ break;
+ case user_summary_sort_arg_dir_count:
+ comp = dir_count_comp;
+ break;
+ case user_summary_sort_arg_file_count:
+ comp = file_count_comp;
+ break;
+ case user_summary_sort_arg_size:
+ comp = size_comp;
+ break;
+ default: /* this should never happen, but anyway */
+ comp = size_comp;
+ break;
+ }
+ sort_hash_table(comp);
+ ret = for_each_admissible_user(print_user_summary_line, &usli);
+ if (ret == -E_LOOP_COMPLETE)
+ ret = 1;
+ return ret;
}
static int user_list_loop_function(struct osl_row *row, void *data)
};
uint64_t num;
int ret;
- char *dirname, *buf;
+ char *dirname = NULL, *buf;
check_signals();
ret = -E_LOOP_COMPLETE;
if (!uli->count)
goto err;
+ ret = get_dir_name_of_user_row(row, uli->ui, &dirname);
+ if (ret < 0)
+ goto err;
+ if (!dir_is_admissible(dirname, uli->preg, uli->inverse_matching)) {
+ free(dirname);
+ return 1;
+ }
+ values[ula_dirname].string_value = dirname;
+
ret = get_num_user_files(row, uli->ui, &num);
if (ret < 0)
goto err;
goto err;
values[ula_size].num_value = num;
- ret = get_dir_name_of_user_row(row, uli->ui, &dirname);
- if (ret < 0)
- goto err;
- values[ula_dirname].string_value = dirname;
-
buf = format_items(uli->fi, values);
free(dirname);
+ dirname = NULL;
ret = output("%s", buf);
free(buf);
+ if (ret < 0)
+ goto err;
uli->count--;
return ret;
err:
+ free(dirname);
uli->ret = ret;
uli->osl_errno = (ret == -E_OSL)? osl_errno : 0;
- return -1;
+ return ret;
}
static int print_user_list(struct user_info *ui, void *data)
{
- struct format_info *fi = data;
+ struct user_list_format_info *ulfi = data;
int ret;
- enum user_table_columns sort_column = UT_BYTES;
+ enum user_table_columns sort_column;
struct user_list_info uli = {
.ui = ui,
- .fi = fi,
+ .fi = ulfi->fi,
.count = select_conf.limit_arg
};
+ union atom_value header_values[] = {
+ [ulha_uid] = {.num_value = (long long unsigned)ui->uid},
+ [ulha_pw_name] = {.string_value = ui->pw_name?
+ ui->pw_name : "?"}
+ };
+ char *buf = format_items(ulfi->header_fi, header_values);
+ ret = output("%s", buf);
+ free(buf);
+ if (ret < 0)
+ return ret;
if (select_conf.list_sort_arg == list_sort_arg_file_count)
sort_column = UT_FILES;
+ else
+ sort_column = UT_BYTES;
- if (!select_conf.no_headers_given) {
- ret = output("%s (uid %u)\n",
- ui->pw_name? ui->pw_name : "?", (unsigned)ui->uid);
- if (ret < 0)
- return ret;
- }
- return adu_loop_reverse(ui->table, sort_column, &uli, user_list_loop_function,
- &uli.ret, &uli.osl_errno);
+ ret = compile_regex(&uli.preg, &uli.inverse_matching);
+ if (ret < 0)
+ return ret;
+ ret = adu_loop_reverse(ui->table, sort_column, &uli,
+ user_list_loop_function, &uli.ret, &uli.osl_errno);
+ free_regex(uli.preg);
+ return ret;
+}
+
+static int print_user_lists(struct format_info *fi)
+{
+ struct user_list_format_info ulfi = {.fi = fi};
+ char *header_fmt = select_conf.header_given?
+ select_conf.header_arg : "uid %(uid)(%(pw_name)):\n";
+ int ret = parse_format_string(header_fmt,
+ user_list_header_atoms, &ulfi.header_fi);
+ if (ret < 0)
+ return ret;
+ ret = for_each_admissible_user(print_user_list, &ulfi);
+ free_format_info(ulfi.header_fi);
+ return ret;
}
static int global_list_loop_function(struct osl_row *row, void *data)
[gla_dirname] = {.string_value = NULL}
};
uint64_t num_files, num_bytes;
- char *dirname, *buf;
+ char *dirname = NULL, *buf;
int ret;
check_signals();
if (!gli->count)
goto err;
+ ret = get_dir_name_of_row(row, &dirname);
+ if (ret < 0)
+ goto err;
+ if (!dir_is_admissible(dirname, gli->preg, gli->inverse_matching)) {
+ free(dirname);
+ return 1;
+ }
+ values[gla_dirname].string_value = dirname;
+
ret = get_num_files_of_row(row, &num_files);
if (ret < 0)
goto err;
goto err;
values[gla_size].num_value = (long long unsigned)num_bytes;
- ret = get_dir_name_of_row(row, &dirname);
- if (ret < 0)
- goto err;
- values[gla_dirname].string_value = dirname;
-
buf = format_items(gli->fi, values);
free(dirname);
+ dirname = NULL;
ret = output("%s", buf);
free(buf);
+ if (ret < 0)
+ goto err;
if (gli->count > 0)
gli->count--;
return ret;
err:
+ free(dirname);
gli->ret = ret;
gli->osl_errno = (ret == -E_OSL)? osl_errno : 0;
return -1;
static int print_global_list(struct format_info *fi)
{
int ret;
- enum dir_table_columns sort_column = DT_BYTES;
+ enum dir_table_columns sort_column;
struct global_list_info gli = {
.fi = fi,
.count = select_conf.limit_arg
};
+ char *header = select_conf.header_given?
+ select_conf.header_arg : "Global list\n";
- if (!select_conf.no_headers_given) {
- ret = output("Global list\n");
- if (ret < 0)
- return ret;
- }
+ ret = output("%s", header);
+ if (ret < 0)
+ return ret;
if (select_conf.list_sort_arg == list_sort_arg_file_count)
sort_column = DT_FILES;
- return adu_loop_reverse(dir_table, sort_column, &gli,
+ else
+ sort_column = DT_BYTES;
+ ret = compile_regex(&gli.preg, &gli.inverse_matching);
+ if (ret < 0)
+ return ret;
+ ret = adu_loop_reverse(dir_table, sort_column, &gli,
global_list_loop_function, &gli.ret, &gli.osl_errno);
+ free_regex(gli.preg);
+ return ret;
}
static int print_statistics(struct format_info *fi)
{
switch (select_conf.select_mode_arg) {
- case select_mode_arg_global_list:
- return print_global_list(fi);
- case select_mode_arg_global_summary:
- return print_global_summary(fi);
- case select_mode_arg_user_list:
- return for_each_admissible_user(print_user_list, fi);
- case select_mode_arg_user_summary:
- return print_user_summary(fi);
+ case select_mode_arg_global_list:
+ return print_global_list(fi);
+ case select_mode_arg_global_summary:
+ return print_global_summary(fi);
+ case select_mode_arg_user_list:
+ return print_user_lists(fi);
+ case select_mode_arg_user_summary:
+ return print_user_summary(fi);
};
ERROR_LOG("bad select mode\n");
- return ERRNO_TO_ERROR(-EINVAL);
+ return -ERRNO_TO_ERROR(EINVAL);
}
-static int read_uid_file(struct uid_range *admissible_uids)
+static int open_pipe(char *path)
{
- size_t size;
- uint32_t n;
- char *filename = get_uid_list_name(), *map;
- int ret = mmap_full_file(filename, O_RDONLY, (void **)&map, &size, NULL);
- unsigned bits;
+ int p[2], ret, argc;
+ char **argv;
- if (ret < 0) {
- INFO_LOG("failed to map %s\n", filename);
- free(filename);
- return ret;
+ ret = pipe(p);
+ if (ret < 0)
+ return ERRNO_TO_ERROR(errno);
+ ret = fork();
+ if (ret < 0)
+ return ERRNO_TO_ERROR(errno);
+ if (ret) { /* parent */
+ DEBUG_LOG("created process %d\n", ret);
+ close(p[0]);
+ output_file = fdopen(p[1], "w");
+ if (!output_file)
+ return ERRNO_TO_ERROR(errno);
+ return 1;
+ }
+ close(p[1]);
+ if (p[0] != STDIN_FILENO)
+ dup2(p[0], STDIN_FILENO);
+ DEBUG_LOG("executing %s\n", path);
+ argc = split_args(path, &argv, " \t");
+ execvp(argv[0], argv);
+ ERROR_LOG("error executing %s: %s\n", path,
+ adu_strerror(ERRNO_TO_ERROR(errno)));
+ _exit(EXIT_FAILURE);
+}
+
+static int open_output_stream(void)
+{
+ char *p;
+ int ret, flags = O_WRONLY | O_CREAT;
+
+ if (!select_conf.output_given)
+ goto use_stdout;
+ p = select_conf.output_arg;
+ switch (p[0]) {
+ case '\0': /* empty string */
+ goto bad_output_arg;
+ case '-':
+ if (!p[1]) /* "-" means stdout */
+ goto use_stdout;
+ /* string starting with a dash */
+ flags |= O_EXCL;
+ goto open_file;
+ case '>':
+ if (!p[1]) /* ">" is invalid */
+ goto bad_output_arg;
+ if (p[1] != '>') {
+ p++;
+ flags |= O_TRUNC;
+ goto open_file;
+ }
+ /* string starting with ">>" */
+ if (!p[2]) /* ">>" is invalid */
+ goto bad_output_arg;
+ flags |= O_APPEND;
+ p += 2;
+ goto open_file;
+ case '|':
+ if (!p[1]) /* "|" is invalid */
+ goto bad_output_arg;
+ p++;
+ return open_pipe(p);
+ default: /* args starts with no magic character */
+ flags |= O_EXCL;
+ goto open_file;
}
- num_uids = size / 4;
- INFO_LOG("found %u uids in %s\n", (unsigned)num_uids, filename);
- free(filename);
+use_stdout:
+ output_file = stdout;
+ return 1;
+bad_output_arg:
+ output_file = NULL;
+ return -E_BAD_OUTPUT_ARG;
+open_file:
/*
- * Compute number of hash table bits. The hash table size must be a
- * power of two and larger than the number of uids.
+ * glibc's 'x' mode to fopen is not portable, so use open() and
+ * fdopen().
*/
- bits = 2;
- while (1 << bits < num_uids)
- bits++;
- create_hash_table(bits);
- for (n = 0; n < num_uids; n++) {
- uint32_t uid = read_u32(map + n * sizeof(uid));
- ret = search_uid(uid, admissible_uids, OPEN_USER_TABLE, NULL);
- if (ret < 0)
- goto out;
- }
-out:
- adu_munmap(map, size);
- return ret;
+ ret = open(p, flags, 0644);
+ if (ret < 0)
+ return -ERRNO_TO_ERROR(errno);
+ output_file = fdopen(ret, "w");
+ if (!output_file)
+ return -ERRNO_TO_ERROR(errno);
+ return 1;
}
+/**
+ * Execute a select query.
+ *
+ * \param admissible_uids User IDs to take into account.
+ * \param fi Format information.
+ *
+ * Called once in select mode or for each \a run command in interactive mode.
+ *
+ * Open the output stream and the dir table if not already open. For each
+ * admissible uid, the user table is opened if necessary. After these
+ * preparations, the output according to \a select_mode and \a fi is written to
+ * the output stream.
+ *
+ * \return Standard.
+ */
int run_select_query(struct uid_range *admissible_uids, struct format_info *fi)
{
- int ret;
-
- if (select_conf.output_given && strcmp(select_conf.output_arg, "-")) {
- output_file = fopen(select_conf.output_arg, "w");
- if (!output_file)
- return -ERRNO_TO_ERROR(errno);
- } else
- output_file = stdout;
+ int ret = open_output_stream();
+ if (ret < 0)
+ goto out;
ret = open_dir_table(0);
if (ret < 0)
goto out;
check_signals();
- ret = read_uid_file(admissible_uids);
+ ret = open_admissible_user_tables(admissible_uids);
if (ret < 0)
goto out;
check_signals();
ret = print_statistics(fi);
out:
- close_all_tables();
- if (output_file != stdout)
+ if (output_file && output_file != stdout) {
fclose(output_file);
+ output_file = NULL;
+ }
return ret;
}
+/** Default format string for global_list mode. */
#define GLOBAL_LIST_DFLT_FMT "%(size:r:8) %(files:r:8) %(dirname)\n"
+/** Default format string for global_summary mode. */
#define GLOBAL_SUMMARY_DFLT_FMT "#directories: %(dirs), #files: %(files), size: %(size)\n\n"
+/** Default format string for user_list mode. */
#define USER_LIST_DFLT_FMT "%(size:r:5) %(files:r:5) %(dirname)\n"
+/** Default format string for user_summary mode. */
#define USER_SUMMARY_DFLT_FMT "%(pw_name:l:16) %(uid:r:5) %(dirs:r:5) %(files:r:5) %(size:r:5)\n"
-/* return: < 0: error, >0: OK, == 0: help given */
+static int setup_format_string(char *fmt, struct format_info **fi)
+{
+ struct atom *atoms;
+
+ if (!fmt)
+ INFO_LOG("using default format string\n");
+ switch (select_conf.select_mode_arg) {
+ case select_mode_arg_global_list:
+ if (!fmt)
+ fmt = GLOBAL_LIST_DFLT_FMT;
+ atoms = global_list_atoms;
+ break;
+ case select_mode_arg_global_summary:
+ if (!fmt)
+ fmt = GLOBAL_SUMMARY_DFLT_FMT;
+ atoms = global_summary_atoms;
+ break;
+ case select_mode_arg_user_list:
+ if (!fmt)
+ fmt = USER_LIST_DFLT_FMT;
+ atoms = user_list_atoms;
+ break;
+ case select_mode_arg_user_summary:
+ if (!fmt)
+ fmt = USER_SUMMARY_DFLT_FMT;
+ atoms = user_summary_atoms;
+ break;
+ default:
+ ERROR_LOG("bad select mode\n");
+ return -ERRNO_TO_ERROR(EINVAL);
+ };
+ INFO_LOG("format string: %s\n", fmt);
+ return parse_format_string(fmt, atoms, fi);
+}
+
+/**
+ * Parse a given format string.
+ *
+ * \param string The format string to parse.
+ * \param params gengetopt parameters.
+ * \param admissible_uids The array of admissible uid ranges.
+ * \param fi The format info to be used with format_items().
+ *
+ * If \a string is not \p NULL, it is broken down into its components using
+ * \ref create_argv() and the resulting argument vector is passed together with
+ * \a params to gengetopt's command line parser. If --help or --detailed-help
+ * was specified in \a string, the corresponding help text is printed and the
+ * function returns zero.
+ *
+ * Otherwise, any --uid or --user options are parsed and transformed into an
+ * array of admissible uids which is returned via \a admissible_uids.
+ *
+ * Finally, the format string given by --format (or the default format string
+ * for the given select mode if no --format option was given in \a string) is
+ * parsed as well resulting in a format_info structure which is returned via
+ * \a fi. The caller uses the \a fi pointer later to format each output line.
+ *
+ * \return Negative on errors, zero if --help or --detailed-help was given,
+ * positive otherwise.
+ *
+ * \sa format_items().
+ */
int parse_select_options(char *string, struct select_cmdline_parser_params *params,
struct uid_range **admissible_uids, struct format_info **fi)
{
- int ret;
+ int ret, num_uid_ranges;
const char **line;
char *fmt = NULL;
- struct atom *atoms;
- if (conf.select_options_given) {
+ if (string) {
int argc;
char **argv;
if (select_conf.help_given || select_conf.detailed_help_given)
goto help;
fmt = select_conf.format_arg;
-
}
ret = parse_uid_arg(select_conf.uid_arg, admissible_uids);
if (ret < 0)
return ret;
-
- switch (select_conf.select_mode_arg) {
- case select_mode_arg_global_list:
- if (!fmt)
- fmt = GLOBAL_LIST_DFLT_FMT;
- atoms = global_list_atoms;
- case select_mode_arg_global_summary:
- if (!fmt)
- fmt = GLOBAL_SUMMARY_DFLT_FMT;
- atoms = global_summary_atoms;
- case select_mode_arg_user_list:
- if (!fmt)
- fmt = USER_LIST_DFLT_FMT;
- atoms = user_list_atoms;
- case select_mode_arg_user_summary:
- if (!fmt)
- fmt = USER_SUMMARY_DFLT_FMT;
- atoms = user_summary_atoms;
- };
- return parse_format_string(fmt, atoms, fi);
+ num_uid_ranges = ret;
+ ret = append_users(select_conf.user_arg, select_conf.user_given,
+ admissible_uids, num_uid_ranges);
+ if (ret < 0)
+ return ret;
+ return setup_format_string(fmt, fi);
help:
line = select_conf.detailed_help_given?
select_args_info_detailed_help : select_args_info_help;
return 0;
}
+/**
+ * Main function for select mode.
+ *
+ * \return Standard.
+ */
int com_select(void)
{
struct uid_range *admissible_uids = NULL;
.print_errors = 1
};
- select_cmdline_parser_init(&select_conf);
ret = parse_select_options(conf.select_options_arg, ¶ms,
&admissible_uids, &fi);
- if (ret <= 0) /* do not run query if help was given */
- return ret;
- ret = run_select_query(admissible_uids, fi);
- free_format_info(fi);
+ if (ret > 0) {
+ ret = read_uid_file();
+ if (ret < 0)
+ goto out;
+ ret = run_select_query(admissible_uids, fi);
+ free_format_info(fi);
+ }
+out:
+ select_cmdline_parser_free(&select_conf);
return ret;
}
projects / adu.git / blobdiff