kmod_config_add_weakdep and weakdep_to_char functions were copied and
adapted from kmod_config_add_softdep and softdep_to_char.
These functions are very big and with big common parts. Extract those
common parts to have a more modular, non-repeated and reusable code.
No functional change.
Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@xxxxxxxxxx>
---
libkmod/libkmod-config.c | 338 ++++++++++++++-------------------------
1 file changed, 123 insertions(+), 215 deletions(-)
diff --git a/libkmod/libkmod-config.c b/libkmod/libkmod-config.c
index a571b6b..1428381 100644
--- a/libkmod/libkmod-config.c
+++ b/libkmod/libkmod-config.c
@@ -64,6 +64,10 @@ struct kmod_weakdep {
unsigned int n_weak;
};
+#define SOFTDEP_TDEP_NUMBER 2
+#define WEAKDEP_TDEP_NUMBER 1
+#define MAX_TDEP_NUMBER SOFTDEP_TDEP_NUMBER
+
const char *kmod_blacklist_get_modname(const struct kmod_list *l)
{
return l->data;
@@ -271,25 +275,24 @@ static void kmod_config_free_blacklist(struct kmod_config *config,
config->blacklists = kmod_list_remove(l);
}
-static int kmod_config_add_softdep(struct kmod_config *config,
- const char *modname,
- const char *line)
+static size_t dep_analyze(const char *line,
+ char *itr,
+ const char **dep[],
+ const char *prefix[],
+ unsigned int *n_dep[],
+ const unsigned int n_tdep)
{
- struct kmod_list *list;
- struct kmod_softdep *dep;
const char *s, *p;
- char *itr;
- unsigned int n_pre = 0, n_post = 0;
- size_t modnamelen = strlen(modname) + 1;
- size_t buflen = 0;
bool was_space = false;
- enum { S_NONE, S_PRE, S_POST } mode = S_NONE;
-
- DBG(config->ctx, "modname=%s\n", modname);
+ unsigned int i;
+ size_t buflen = 0;
+ int next_mode = -1;
- /* analyze and count */
+ /* analyze */
for (p = s = line; ; s++) {
size_t plen;
+ size_t sz_prefix;
+ int mode = 0;
if (*s != '\0') {
if (!isspace(*s)) {
@@ -308,19 +311,36 @@ static int kmod_config_add_softdep(struct kmod_config *config,
}
plen = s - p;
- if (plen == sizeof("pre:") - 1 &&
- memcmp(p, "pre:", sizeof("pre:") - 1) == 0)
- mode = S_PRE;
- else if (plen == sizeof("post:") - 1 &&
- memcmp(p, "post:", sizeof("post:") - 1) == 0)
- mode = S_POST;
- else if (*s != '\0' || (*s == '\0' && !was_space)) {
- if (mode == S_PRE) {
- buflen += plen + 1;
- n_pre++;
- } else if (mode == S_POST) {
- buflen += plen + 1;
- n_post++;
+ if (next_mode >= 0) {
+ mode = next_mode;
+ next_mode = -1;
+ } else {
+ for(i = 0; i < n_tdep; i++) {
+ sz_prefix = strlen(prefix[i]);
+ if (!sz_prefix) {
+ mode = i;
+ break;
+ }
+ else if (sz_prefix && plen == sz_prefix &&
+ memcmp(p, prefix[i], sz_prefix) == 0) {
+ next_mode = mode = i;
+ break;
+ }
+ }
+ }
+ if (next_mode < 0) {
+ if (*s != '\0' || (*s == '\0' && !was_space)) {
+ if (itr) {
+ /* copy */
+ dep[mode][*n_dep[mode]] = itr;
+ memcpy(itr, p, plen);
+ itr[plen] = '\0';
+ itr += plen + 1;
+ } else {
+ /* count */
+ buflen += plen + 1;
+ }
+ (*n_dep[mode])++;
}
}
p = s + 1;
@@ -328,6 +348,28 @@ static int kmod_config_add_softdep(struct kmod_config *config,
break;
}
+ return buflen;
+}
+
+static int kmod_config_add_softdep(struct kmod_config *config,
+ const char *modname,
+ const char *line)
+{
+ struct kmod_list *list;
+ struct kmod_softdep *dep;
+ char *itr;
+ unsigned int n_pre = 0, n_post = 0;
+ size_t modnamelen = strlen(modname) + 1;
+ size_t buflen = 0;
+ const char **dep_array[SOFTDEP_TDEP_NUMBER] = {NULL, NULL};
+ const char *prefix_array[SOFTDEP_TDEP_NUMBER] = {"pre:", "post:"};
+ unsigned int *n_dep_array[SOFTDEP_TDEP_NUMBER] = {&n_pre, &n_post};
+
+ DBG(config->ctx, "modname=%s\n", modname);
+
+ /* analyze and count */
+ buflen = dep_analyze(line, NULL, dep_array, prefix_array, n_dep_array, SOFTDEP_TDEP_NUMBER);
+
DBG(config->ctx, "%u pre, %u post\n", n_pre, n_post);
dep = malloc(sizeof(struct kmod_softdep) + modnamelen +
@@ -350,53 +392,9 @@ static int kmod_config_add_softdep(struct kmod_config *config,
itr = dep->name + modnamelen;
n_pre = 0;
n_post = 0;
- mode = S_NONE;
- was_space = false;
- for (p = s = line; ; s++) {
- size_t plen;
-
- if (*s != '\0') {
- if (!isspace(*s)) {
- was_space = false;
- continue;
- }
-
- if (was_space) {
- p = s + 1;
- continue;
- }
- was_space = true;
-
- if (p >= s)
- continue;
- }
- plen = s - p;
-
- if (plen == sizeof("pre:") - 1 &&
- memcmp(p, "pre:", sizeof("pre:") - 1) == 0)
- mode = S_PRE;
- else if (plen == sizeof("post:") - 1 &&
- memcmp(p, "post:", sizeof("post:") - 1) == 0)
- mode = S_POST;
- else if (*s != '\0' || (*s == '\0' && !was_space)) {
- if (mode == S_PRE) {
- dep->pre[n_pre] = itr;
- memcpy(itr, p, plen);
- itr[plen] = '\0';
- itr += plen + 1;
- n_pre++;
- } else if (mode == S_POST) {
- dep->post[n_post] = itr;
- memcpy(itr, p, plen);
- itr[plen] = '\0';
- itr += plen + 1;
- n_post++;
- }
- }
- p = s + 1;
- if (*s == '\0')
- break;
- }
+ dep_array[0] = dep->pre;
+ dep_array[1] = dep->post;
+ dep_analyze(line, itr, dep_array, prefix_array, n_dep_array, SOFTDEP_TDEP_NUMBER);
list = kmod_list_append(config->softdeps, dep);
if (list == NULL) {
@@ -414,44 +412,18 @@ static int kmod_config_add_weakdep(struct kmod_config *config,
{
struct kmod_list *list;
struct kmod_weakdep *dep;
- const char *s, *p;
char *itr;
unsigned int n_weak = 0;
size_t modnamelen = strlen(modname) + 1;
size_t buflen = 0;
- bool was_space = false;
+ const char **dep_array[WEAKDEP_TDEP_NUMBER] = {NULL};
+ const char *prefix_array[WEAKDEP_TDEP_NUMBER]={""};
+ unsigned int *n_dep_array[WEAKDEP_TDEP_NUMBER]={&n_weak};
DBG(config->ctx, "modname=%s\n", modname);
/* analyze and count */
- for (p = s = line; ; s++) {
- size_t plen;
-
- if (*s != '\0') {
- if (!isspace(*s)) {
- was_space = false;
- continue;
- }
-
- if (was_space) {
- p = s + 1;
- continue;
- }
- was_space = true;
-
- if (p >= s)
- continue;
- }
- plen = s - p;
-
- if (*s != '\0' || (*s == '\0' && !was_space)) {
- buflen += plen + 1;
- n_weak++;
- }
- p = s + 1;
- if (*s == '\0')
- break;
- }
+ buflen = dep_analyze(line, NULL, dep_array, prefix_array, n_dep_array, WEAKDEP_TDEP_NUMBER);
DBG(config->ctx, "%u weak\n", n_weak);
@@ -471,38 +443,8 @@ static int kmod_config_add_weakdep(struct kmod_config *config,
/* copy strings */
itr = dep->name + modnamelen;
n_weak = 0;
- was_space = false;
- for (p = s = line; ; s++) {
- size_t plen;
-
- if (*s != '\0') {
- if (!isspace(*s)) {
- was_space = false;
- continue;
- }
-
- if (was_space) {
- p = s + 1;
- continue;
- }
- was_space = true;
-
- if (p >= s)
- continue;
- }
- plen = s - p;
-
- if (*s != '\0' || (*s == '\0' && !was_space)) {
- dep->weak[n_weak] = itr;
- memcpy(itr, p, plen);
- itr[plen] = '\0';
- itr += plen + 1;
- n_weak++;
- }
- p = s + 1;
- if (*s == '\0')
- break;
- }
+ dep_array[0] = dep->weak;
+ dep_analyze(line, itr, dep_array, prefix_array, n_dep_array, WEAKDEP_TDEP_NUMBER);
list = kmod_list_append(config->weakdeps, dep);
if (list == NULL) {
@@ -514,68 +456,56 @@ static int kmod_config_add_weakdep(struct kmod_config *config,
return 0;
}
-static char *softdep_to_char(struct kmod_softdep *dep) {
- const size_t sz_preprefix = sizeof("pre: ") - 1;
- const size_t sz_postprefix = sizeof("post: ") - 1;
+static char *dep_to_char(const char **dep[],
+ const char *prefix[],
+ const unsigned int n_dep[],
+ const unsigned int n_tdep)
+{
+ size_t sz_prefix[MAX_TDEP_NUMBER];
size_t sz = 1; /* at least '\0' */
- size_t sz_pre, sz_post;
+ size_t sz_dep[MAX_TDEP_NUMBER];
const char *start, *end;
char *s, *itr;
+ unsigned int i;
/*
- * Rely on the fact that dep->pre[] and dep->post[] are strv's that
+ * Rely on the fact that dep's are strv's that
* point to a contiguous buffer
*/
- if (dep->n_pre > 0) {
- start = dep->pre[0];
- end = dep->pre[dep->n_pre - 1]
- + strlen(dep->pre[dep->n_pre - 1]);
- sz_pre = end - start;
- sz += sz_pre + sz_preprefix;
- } else
- sz_pre = 0;
-
- if (dep->n_post > 0) {
- start = dep->post[0];
- end = dep->post[dep->n_post - 1]
- + strlen(dep->post[dep->n_post - 1]);
- sz_post = end - start;
- sz += sz_post + sz_postprefix;
- } else
- sz_post = 0;
+ for(i = 0; i < n_tdep; i++) {
+ sz_prefix[i] = sizeof(prefix[i]);
+ if (sz_prefix[i])
+ sz_prefix[i] -= 1;
+
+ if (n_dep[i] > 0) {
+ start = dep[i][0];
+ end = dep[i][n_dep[i] - 1]
+ + strlen(dep[i][n_dep[i] - 1]);
+ sz_dep[i] = end - start;
+ sz += sz_dep[i] + sz_prefix[i];
+ } else
+ sz_dep[i] = 0;
+ }
itr = s = malloc(sz);
if (s == NULL)
return NULL;
- if (sz_pre) {
- char *p;
-
- memcpy(itr, "pre: ", sz_preprefix);
- itr += sz_preprefix;
-
- /* include last '\0' */
- memcpy(itr, dep->pre[0], sz_pre + 1);
- for (p = itr; p < itr + sz_pre; p++) {
- if (*p == '\0')
- *p = ' ';
- }
- itr = p;
- }
-
- if (sz_post) {
- char *p;
+ for(i = 0; i < n_tdep; i++) {
+ if (sz_dep[i]) {
+ char *p;
- memcpy(itr, "post: ", sz_postprefix);
- itr += sz_postprefix;
+ memcpy(itr, prefix[i], sz_prefix[i]);
+ itr += sz_prefix[i];
- /* include last '\0' */
- memcpy(itr, dep->post[0], sz_post + 1);
- for (p = itr; p < itr + sz_post; p++) {
- if (*p == '\0')
- *p = ' ';
+ /* include last '\0' */
+ memcpy(itr, dep[i][0], sz_dep[i] + 1);
+ for (p = itr; p < itr + sz_dep[i]; p++) {
+ if (*p == '\0')
+ *p = ' ';
+ }
+ itr = p;
}
- itr = p;
}
*itr = '\0';
@@ -583,42 +513,20 @@ static char *softdep_to_char(struct kmod_softdep *dep) {
return s;
}
-static char *weakdep_to_char(struct kmod_weakdep *dep) {
- size_t sz;
- const char *start, *end;
- char *s, *itr;
+static char *softdep_to_char(struct kmod_softdep *softdep) {
+ const char **dep_array[SOFTDEP_TDEP_NUMBER]={softdep->pre, softdep->post};
+ const char *prefix_array[SOFTDEP_TDEP_NUMBER]={"pre: ", "post: "};
+ const unsigned int n_dep_array[SOFTDEP_TDEP_NUMBER]={softdep->n_pre, softdep->n_post};
- /*
- * Rely on the fact that dep->weak[] and are strv's that point to a
- * contiguous buffer
- */
- if (dep->n_weak > 0) {
- start = dep->weak[0];
- end = dep->weak[dep->n_weak - 1]
- + strlen(dep->weak[dep->n_weak - 1]);
- sz = end - start;
- } else
- sz = 0;
-
- itr = s = malloc(sz);
- if (s == NULL)
- return NULL;
-
- if (sz) {
- char *p;
-
- /* include last '\0' */
- memcpy(itr, dep->weak[0], sz + 1);
- for (p = itr; p < itr + sz; p++) {
- if (*p == '\0')
- *p = ' ';
- }
- itr = p;
- }
+ return dep_to_char(dep_array, prefix_array, n_dep_array, SOFTDEP_TDEP_NUMBER);
+}
- *itr = '\0';
+static char *weakdep_to_char(struct kmod_weakdep *weakdep) {
+ const char **dep_array[WEAKDEP_TDEP_NUMBER]={weakdep->weak};
+ const char *prefix_array[WEAKDEP_TDEP_NUMBER]={""};
+ const unsigned int n_dep_array[WEAKDEP_TDEP_NUMBER]={weakdep->n_weak};
- return s;
+ return dep_to_char(dep_array, prefix_array, n_dep_array, WEAKDEP_TDEP_NUMBER);
}
static void kmod_config_free_softdep(struct kmod_config *config,
--
2.45.1
