-#include <assert.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
+#include "qemu/osdep.h"
#include "qemu/queue.h"
#include "qemu/envlist.h"
struct envlist_entry {
- const char *ev_var; /* actual env value */
- QLIST_ENTRY(envlist_entry) ev_link;
+ const char *ev_var; /* actual env value */
+ QLIST_ENTRY(envlist_entry) ev_link;
};
struct envlist {
- QLIST_HEAD(, envlist_entry) el_entries; /* actual entries */
- size_t el_count; /* number of entries */
+ QLIST_HEAD(, envlist_entry) el_entries; /* actual entries */
+ size_t el_count; /* number of entries */
};
static int envlist_parse(envlist_t *envlist,
const char *env, int (*)(envlist_t *, const char *));
/*
- * Allocates new envlist and returns pointer to that or
- * NULL in case of error.
+ * Allocates new envlist and returns pointer to it.
*/
envlist_t *
envlist_create(void)
{
- envlist_t *envlist;
+ envlist_t *envlist;
- if ((envlist = malloc(sizeof (*envlist))) == NULL)
- return (NULL);
+ envlist = g_malloc(sizeof(*envlist));
- QLIST_INIT(&envlist->el_entries);
- envlist->el_count = 0;
+ QLIST_INIT(&envlist->el_entries);
+ envlist->el_count = 0;
- return (envlist);
+ return (envlist);
}
/*
void
envlist_free(envlist_t *envlist)
{
- struct envlist_entry *entry;
+ struct envlist_entry *entry;
- assert(envlist != NULL);
+ assert(envlist != NULL);
- while (envlist->el_entries.lh_first != NULL) {
- entry = envlist->el_entries.lh_first;
- QLIST_REMOVE(entry, ev_link);
+ while (envlist->el_entries.lh_first != NULL) {
+ entry = envlist->el_entries.lh_first;
+ QLIST_REMOVE(entry, ev_link);
- free((char *)entry->ev_var);
- free(entry);
- }
- free(envlist);
+ g_free((char *)entry->ev_var);
+ g_free(entry);
+ }
+ g_free(envlist);
}
/*
int
envlist_parse_set(envlist_t *envlist, const char *env)
{
- return (envlist_parse(envlist, env, &envlist_setenv));
+ return (envlist_parse(envlist, env, &envlist_setenv));
}
/*
int
envlist_parse_unset(envlist_t *envlist, const char *env)
{
- return (envlist_parse(envlist, env, &envlist_unsetenv));
+ return (envlist_parse(envlist, env, &envlist_unsetenv));
}
/*
envlist_parse(envlist_t *envlist, const char *env,
int (*callback)(envlist_t *, const char *))
{
- char *tmpenv, *envvar;
- char *envsave = NULL;
-
- assert(callback != NULL);
-
- if ((envlist == NULL) || (env == NULL))
- return (EINVAL);
-
- /*
- * We need to make temporary copy of the env string
- * as strtok_r(3) modifies it while it tokenizes.
- */
- if ((tmpenv = strdup(env)) == NULL)
- return (errno);
-
- envvar = strtok_r(tmpenv, ",", &envsave);
- while (envvar != NULL) {
- if ((*callback)(envlist, envvar) != 0) {
- free(tmpenv);
- return (errno);
- }
- envvar = strtok_r(NULL, ",", &envsave);
- }
-
- free(tmpenv);
- return (0);
+ char *tmpenv, *envvar;
+ char *envsave = NULL;
+ int ret = 0;
+ assert(callback != NULL);
+
+ if ((envlist == NULL) || (env == NULL))
+ return (EINVAL);
+
+ tmpenv = g_strdup(env);
+ envsave = tmpenv;
+
+ do {
+ envvar = strchr(tmpenv, ',');
+ if (envvar != NULL) {
+ *envvar = '\0';
+ }
+ if ((*callback)(envlist, tmpenv) != 0) {
+ ret = errno;
+ break;
+ }
+ tmpenv = envvar + 1;
+ } while (envvar != NULL);
+
+ g_free(envsave);
+ return ret;
}
/*
int
envlist_setenv(envlist_t *envlist, const char *env)
{
- struct envlist_entry *entry = NULL;
- const char *eq_sign;
- size_t envname_len;
-
- if ((envlist == NULL) || (env == NULL))
- return (EINVAL);
-
- /* find out first equals sign in given env */
- if ((eq_sign = strchr(env, '=')) == NULL)
- return (EINVAL);
- envname_len = eq_sign - env + 1;
-
- /*
- * If there already exists variable with given name
- * we remove and release it before allocating a whole
- * new entry.
- */
- for (entry = envlist->el_entries.lh_first; entry != NULL;
- entry = entry->ev_link.le_next) {
- if (strncmp(entry->ev_var, env, envname_len) == 0)
- break;
- }
-
- if (entry != NULL) {
- QLIST_REMOVE(entry, ev_link);
- free((char *)entry->ev_var);
- free(entry);
- } else {
- envlist->el_count++;
- }
-
- if ((entry = malloc(sizeof (*entry))) == NULL)
- return (errno);
- if ((entry->ev_var = strdup(env)) == NULL) {
- free(entry);
- return (errno);
- }
- QLIST_INSERT_HEAD(&envlist->el_entries, entry, ev_link);
-
- return (0);
+ struct envlist_entry *entry = NULL;
+ const char *eq_sign;
+ size_t envname_len;
+
+ if ((envlist == NULL) || (env == NULL))
+ return (EINVAL);
+
+ /* find out first equals sign in given env */
+ if ((eq_sign = strchr(env, '=')) == NULL)
+ return (EINVAL);
+ envname_len = eq_sign - env + 1;
+
+ /*
+ * If there already exists variable with given name
+ * we remove and release it before allocating a whole
+ * new entry.
+ */
+ for (entry = envlist->el_entries.lh_first; entry != NULL;
+ entry = entry->ev_link.le_next) {
+ if (strncmp(entry->ev_var, env, envname_len) == 0)
+ break;
+ }
+
+ if (entry != NULL) {
+ QLIST_REMOVE(entry, ev_link);
+ g_free((char *)entry->ev_var);
+ g_free(entry);
+ } else {
+ envlist->el_count++;
+ }
+
+ entry = g_malloc(sizeof(*entry));
+ entry->ev_var = g_strdup(env);
+ QLIST_INSERT_HEAD(&envlist->el_entries, entry, ev_link);
+
+ return (0);
}
/*
int
envlist_unsetenv(envlist_t *envlist, const char *env)
{
- struct envlist_entry *entry;
- size_t envname_len;
-
- if ((envlist == NULL) || (env == NULL))
- return (EINVAL);
-
- /* env is not allowed to contain '=' */
- if (strchr(env, '=') != NULL)
- return (EINVAL);
-
- /*
- * Find out the requested entry and remove
- * it from the list.
- */
- envname_len = strlen(env);
- for (entry = envlist->el_entries.lh_first; entry != NULL;
- entry = entry->ev_link.le_next) {
- if (strncmp(entry->ev_var, env, envname_len) == 0)
- break;
- }
- if (entry != NULL) {
- QLIST_REMOVE(entry, ev_link);
- free((char *)entry->ev_var);
- free(entry);
-
- envlist->el_count--;
- }
- return (0);
+ struct envlist_entry *entry;
+ size_t envname_len;
+
+ if ((envlist == NULL) || (env == NULL))
+ return (EINVAL);
+
+ /* env is not allowed to contain '=' */
+ if (strchr(env, '=') != NULL)
+ return (EINVAL);
+
+ /*
+ * Find out the requested entry and remove
+ * it from the list.
+ */
+ envname_len = strlen(env);
+ for (entry = envlist->el_entries.lh_first; entry != NULL;
+ entry = entry->ev_link.le_next) {
+ if (strncmp(entry->ev_var, env, envname_len) == 0)
+ break;
+ }
+ if (entry != NULL) {
+ QLIST_REMOVE(entry, ev_link);
+ g_free((char *)entry->ev_var);
+ g_free(entry);
+
+ envlist->el_count--;
+ }
+ return (0);
}
/*
* Returns given envlist as array of strings (in same form that
* global variable environ is). Caller must free returned memory
- * by calling free(3) for each element and for the array. Returned
- * array and given envlist are not related (no common references).
+ * by calling g_free for each element and the array.
+ * Returned array and given envlist are not related (no common
+ * references).
*
* If caller provides count pointer, number of items in array is
- * stored there. In case of error, NULL is returned and no memory
- * is allocated.
+ * stored there.
*/
char **
envlist_to_environ(const envlist_t *envlist, size_t *count)
{
- struct envlist_entry *entry;
- char **env, **penv;
+ struct envlist_entry *entry;
+ char **env, **penv;
- penv = env = malloc((envlist->el_count + 1) * sizeof (char *));
- if (env == NULL)
- return (NULL);
+ penv = env = g_new(char *, envlist->el_count + 1);
- for (entry = envlist->el_entries.lh_first; entry != NULL;
- entry = entry->ev_link.le_next) {
- *(penv++) = strdup(entry->ev_var);
- }
- *penv = NULL; /* NULL terminate the list */
+ for (entry = envlist->el_entries.lh_first; entry != NULL;
+ entry = entry->ev_link.le_next) {
+ *(penv++) = g_strdup(entry->ev_var);
+ }
+ *penv = NULL; /* NULL terminate the list */
- if (count != NULL)
- *count = envlist->el_count;
+ if (count != NULL)
+ *count = envlist->el_count;
- return (env);
+ return (env);
}
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