Signed-off-by: Valerie Aurora Henson <[email protected]>
---
daemon/automount.c | 6 +++---
daemon/direct.c | 8 +++-----
daemon/flag.c | 12 ++++++------
daemon/indirect.c | 8 +++-----
daemon/module.c | 42 ++++++++++++------------------------------
lib/cache.c | 20 ++++++--------------
lib/cat_path.c | 1 -
modules/lookup_nisplus.c | 22 +++++++++++++++++-----
modules/mount_autofs.c | 1 -
modules/mount_bind.c | 7 ++-----
modules/mount_changer.c | 5 +----
modules/mount_ext2.c | 5 +----
modules/mount_generic.c | 5 +----
13 files changed, 55 insertions(+), 87 deletions(-)
diff --git a/daemon/automount.c b/daemon/automount.c
index 6f078c1..61bbc80 100644
--- a/daemon/automount.c
+++ b/daemon/automount.c
@@ -124,8 +124,8 @@ static int do_mkdir(const char *parent, const char *path,
mode_t mode)
int mkdir_path(const char *path, mode_t mode)
{
- char *buf = alloca(strlen(path) + 1);
- char *parent = alloca(strlen(path) + 1);
+ char buf[PATH_MAX];
+ char parent[PATH_MAX];
const char *cp = path, *lcp = path;
char *bp = buf, *pp = parent;
@@ -160,7 +160,7 @@ int mkdir_path(const char *path, mode_t mode)
int rmdir_path(struct autofs_point *ap, const char *path, dev_t dev)
{
int len = strlen(path);
- char *buf = alloca(len + 1);
+ char buf[PATH_MAX];
char *cp;
int first = 1;
struct stat st;
diff --git a/daemon/direct.c b/daemon/direct.c
index 98fcc07..94216ba 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -742,11 +742,9 @@ int mount_autofs_offset(struct autofs_point *ap, struct
mapent *me, const char *
type = ap->entry->maps->type;
if (type && !strcmp(ap->entry->maps->type, "hosts")) {
- char *tmp = alloca(7);
- if (tmp) {
- strcpy(tmp, "-hosts");
- map_name = (const char *) tmp;
- }
+ char tmp[7];
+ strcpy(tmp, "-hosts");
+ map_name = (const char *) tmp;
} else
map_name = me->mc->map->argv[0];
diff --git a/daemon/flag.c b/daemon/flag.c
index d8ca61b..5c4f0c2 100644
--- a/daemon/flag.c
+++ b/daemon/flag.c
@@ -25,10 +25,10 @@
#include <time.h>
#include <unistd.h>
#include <string.h>
-#include <alloca.h>
#include <stdio.h>
#include <signal.h>
#include <errno.h>
+#include <limits.h>
#define MAX_PIDSIZE 20
#define FLAG_FILE AUTOFS_FLAG_DIR "/autofs-running"
@@ -113,12 +113,12 @@ void release_flag_file(void)
/* * Try to create flag file */
int aquire_flag_file(void)
{
- char *linkf;
- int len;
+ char linkf[PATH_MAX];
- len = strlen(FLAG_FILE) + MAX_PIDSIZE;
- linkf = alloca(len + 1);
- snprintf(linkf, len, "%s.%d", FLAG_FILE, getpid());
+ if (snprintf(linkf, sizeof(linkf), "%s.%d", FLAG_FILE, getpid()) >
+ sizeof(linkf))
+ /* Didn't acquire it */
+ return 0;
/*
* Repeat until it was us who made the link or we find the
diff --git a/daemon/indirect.c b/daemon/indirect.c
index 1232810..31713fd 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -144,11 +144,9 @@ static int do_mount_autofs_indirect(struct autofs_point
*ap, const char *root)
type = ap->entry->maps->type;
if (type && !strcmp(ap->entry->maps->type, "hosts")) {
- char *tmp = alloca(7);
- if (tmp) {
- strcpy(tmp, "-hosts");
- map_name = (const char *) tmp;
- }
+ char tmp[7];
+ strcpy(tmp, "-hosts");
+ map_name = (const char *) tmp;
} else
map_name = ap->entry->maps->argv[0];
diff --git a/daemon/module.c b/daemon/module.c
index 36eca00..06b39c9 100644
--- a/daemon/module.c
+++ b/daemon/module.c
@@ -58,15 +58,10 @@ struct lookup_mod *open_lookup(const char *name, const char
*err_prefix,
{
struct lookup_mod *mod;
char buf[MAX_ERR_BUF];
- char *fnbuf;
- size_t size_name;
- size_t size_fnbuf;
+ char fnbuf[PATH_MAX];
void *dh;
int *ver;
- size_name = _strlen(name, PATH_MAX + 1);
- if (!size_name)
- return NULL;
mod = malloc(sizeof(struct lookup_mod));
if (!mod) {
@@ -77,9 +72,9 @@ struct lookup_mod *open_lookup(const char *name, const char
*err_prefix,
return NULL;
}
- size_fnbuf = size_name + strlen(AUTOFS_LIB_DIR) + 13;
- fnbuf = alloca(size_fnbuf);
- if (!fnbuf) {
+ if (snprintf(fnbuf,
+ sizeof(fnbuf), "%s/lookup_%s.so", AUTOFS_LIB_DIR, name) >
+ sizeof(fnbuf)) {
free(mod);
if (err_prefix) {
char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
@@ -87,7 +82,6 @@ struct lookup_mod *open_lookup(const char *name, const char
*err_prefix,
}
return NULL;
}
- snprintf(fnbuf, size_fnbuf, "%s/lookup_%s.so", AUTOFS_LIB_DIR, name);
if (!(dh = dlopen(fnbuf, RTLD_NOW))) {
if (err_prefix)
@@ -141,15 +135,10 @@ struct parse_mod *open_parse(const char *name, const char
*err_prefix,
{
struct parse_mod *mod;
char buf[MAX_ERR_BUF];
- char *fnbuf;
- size_t size_name;
- size_t size_fnbuf;
+ char fnbuf[PATH_MAX];
void *dh;
int *ver;
- size_name = _strlen(name, PATH_MAX + 1);
- if (!size_name)
- return NULL;
mod = malloc(sizeof(struct parse_mod));
if (!mod) {
@@ -160,9 +149,9 @@ struct parse_mod *open_parse(const char *name, const char
*err_prefix,
return NULL;
}
- size_fnbuf = size_name + strlen(AUTOFS_LIB_DIR) + 13;
- fnbuf = alloca(size_fnbuf);
- if (!fnbuf) {
+ if (snprintf(fnbuf,
+ sizeof(fnbuf), "%s/parse_%s.so", AUTOFS_LIB_DIR, name) >
+ sizeof(fnbuf)) {
free(mod);
if (err_prefix) {
char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
@@ -170,7 +159,6 @@ struct parse_mod *open_parse(const char *name, const char
*err_prefix,
}
return NULL;
}
- snprintf(fnbuf, size_fnbuf, "%s/parse_%s.so", AUTOFS_LIB_DIR, name);
if (!(dh = dlopen(fnbuf, RTLD_NOW))) {
if (err_prefix)
@@ -222,15 +210,10 @@ struct mount_mod *open_mount(const char *name, const char
*err_prefix)
{
struct mount_mod *mod;
char buf[MAX_ERR_BUF];
- char *fnbuf;
- size_t size_name;
- size_t size_fnbuf;
+ char fnbuf[PATH_MAX];
void *dh;
int *ver;
- size_name = _strlen(name, PATH_MAX + 1);
- if (!size_name)
- return NULL;
mod = malloc(sizeof(struct mount_mod));
if (!mod) {
@@ -241,9 +224,9 @@ struct mount_mod *open_mount(const char *name, const char
*err_prefix)
return NULL;
}
- size_fnbuf = size_name + strlen(AUTOFS_LIB_DIR) + 13;
- fnbuf = alloca(size_fnbuf);
- if (!fnbuf) {
+ if (snprintf(fnbuf,
+ sizeof(fnbuf), "%s/mount_%s.so", AUTOFS_LIB_DIR, name) >
+ sizeof(fnbuf)) {
free(mod);
if (err_prefix) {
char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
@@ -251,7 +234,6 @@ struct mount_mod *open_mount(const char *name, const char
*err_prefix)
}
return NULL;
}
- snprintf(fnbuf, size_fnbuf, "%s/mount_%s.so", AUTOFS_LIB_DIR, name);
if (!(dh = dlopen(fnbuf, RTLD_NOW))) {
if (err_prefix)
diff --git a/lib/cache.c b/lib/cache.c
index 36b8294..bc2c722 100644
--- a/lib/cache.c
+++ b/lib/cache.c
@@ -484,27 +484,19 @@ struct mapent *cache_lookup_offset(const char *prefix,
const char *offset, int s
{
struct list_head *p;
struct mapent *this;
- int plen = strlen(prefix);
- char *o_key;
+ char o_key[KEY_MAX_LEN];
/* root offset duplicates "/" */
- if (plen > 1) {
- o_key = alloca(plen + strlen(offset) + 1);
- strcpy(o_key, prefix);
- strcat(o_key, offset);
- } else {
- o_key = alloca(strlen(offset) + 1);
- strcpy(o_key, offset);
- }
+ if (snprintf(o_key, sizeof(o_key), "%s%s", prefix, offset) >
+ sizeof(o_key))
+ return NULL;
list_for_each(p, head) {
this = list_entry(p, struct mapent, multi_list);
if (!strcmp(&this->key[start], o_key))
- goto done;
+ return this;
}
- this = NULL;
-done:
- return this;
+ return NULL;
}
/* cache must be read locked by caller */
diff --git a/lib/cat_path.c b/lib/cat_path.c
index 576b424..60669db 100644
--- a/lib/cat_path.c
+++ b/lib/cat_path.c
@@ -12,7 +12,6 @@
*
* ----------------------------------------------------------------------- */
-#include <alloca.h>
#include <string.h>
#include <limits.h>
#include <ctype.h>
diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
index f15465f..279a8d6 100644
--- a/modules/lookup_nisplus.c
+++ b/modules/lookup_nisplus.c
@@ -93,7 +93,7 @@ int lookup_read_master(struct master *master, time_t age,
void *context)
int cur_state, len;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cur_state);
- tablename = alloca(strlen(ctxt->mapname) + strlen(ctxt->domainname) +
20);
+ tablename = malloc(strlen(ctxt->mapname) + strlen(ctxt->domainname) +
20);
if (!tablename) {
char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
logerr(MODPREFIX "alloca: %s", estr);
@@ -108,6 +108,7 @@ int lookup_read_master(struct master *master, time_t age,
void *context)
nis_freeresult(result);
crit(logopt,
MODPREFIX "couldn't locate nis+ table %s", ctxt->mapname);
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
return NSS_STATUS_NOTFOUND;
}
@@ -119,6 +120,7 @@ int lookup_read_master(struct master *master, time_t age,
void *context)
nis_freeresult(result);
crit(logopt,
MODPREFIX "couldn't enumrate nis+ map %s", ctxt->mapname);
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
return NSS_STATUS_UNAVAIL;
}
@@ -156,6 +158,7 @@ int lookup_read_master(struct master *master, time_t age,
void *context)
}
nis_freeresult(result);
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
return NSS_STATUS_SUCCESS;
@@ -181,7 +184,8 @@ int lookup_read_map(struct autofs_point *ap, time_t age,
void *context)
mc = source->mc;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cur_state);
- tablename = alloca(strlen(ctxt->mapname) + strlen(ctxt->domainname) +
20);
+ tablename = alloca(strlen(ctxt->mapname) + strlen(ctxt->domainname) +
+ 20);
if (!tablename) {
char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
logerr(MODPREFIX "alloca: %s", estr);
@@ -196,6 +200,7 @@ int lookup_read_map(struct autofs_point *ap, time_t age,
void *context)
nis_freeresult(result);
crit(ap->logopt,
MODPREFIX "couldn't locate nis+ table %s", ctxt->mapname);
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
return NSS_STATUS_NOTFOUND;
}
@@ -207,6 +212,7 @@ int lookup_read_map(struct autofs_point *ap, time_t age,
void *context)
nis_freeresult(result);
crit(ap->logopt,
MODPREFIX "couldn't enumrate nis+ map %s", ctxt->mapname);
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
return NSS_STATUS_UNAVAIL;
}
@@ -246,6 +252,7 @@ int lookup_read_map(struct autofs_point *ap, time_t age,
void *context)
source->age = age;
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
return NSS_STATUS_SUCCESS;
@@ -272,8 +279,8 @@ static int lookup_one(struct autofs_point *ap,
mc = source->mc;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cur_state);
- tablename = alloca(strlen(key) +
- strlen(ctxt->mapname) + strlen(ctxt->domainname) + 20);
+ tablename = malloc(strlen(key) + strlen(ctxt->mapname) +
+ strlen(ctxt->domainname) + 20);
if (!tablename) {
char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
logerr(MODPREFIX "alloca: %s", estr);
@@ -287,6 +294,7 @@ static int lookup_one(struct autofs_point *ap,
if (result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) {
nis_error rs = result->status;
nis_freeresult(result);
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
if (rs == NIS_NOTFOUND ||
rs == NIS_S_NOTFOUND ||
@@ -304,6 +312,7 @@ static int lookup_one(struct autofs_point *ap,
cache_unlock(mc);
nis_freeresult(result);
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
return ret;
@@ -328,7 +337,8 @@ static int lookup_wild(struct autofs_point *ap, struct
lookup_context *ctxt)
mc = source->mc;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cur_state);
- tablename = alloca(strlen(ctxt->mapname) + strlen(ctxt->domainname) +
20);
+ tablename = malloc(strlen(ctxt->mapname) + strlen(ctxt->domainname) +
+ 20);
if (!tablename) {
char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
logerr(MODPREFIX "alloca: %s", estr);
@@ -342,6 +352,7 @@ static int lookup_wild(struct autofs_point *ap, struct
lookup_context *ctxt)
if (result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) {
nis_error rs = result->status;
nis_freeresult(result);
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
if (rs == NIS_NOTFOUND ||
rs == NIS_S_NOTFOUND ||
@@ -358,6 +369,7 @@ static int lookup_wild(struct autofs_point *ap, struct
lookup_context *ctxt)
cache_unlock(mc);
nis_freeresult(result);
+ free(tablename);
pthread_setcancelstate(cur_state, NULL);
return ret;
diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
index eb63d8e..effa4fc 100644
--- a/modules/mount_autofs.c
+++ b/modules/mount_autofs.c
@@ -20,7 +20,6 @@
#include <unistd.h>
#include <string.h>
#include <signal.h>
-#include <alloca.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
diff --git a/modules/mount_bind.c b/modules/mount_bind.c
index 022d183..3ec467d 100644
--- a/modules/mount_bind.c
+++ b/modules/mount_bind.c
@@ -71,7 +71,7 @@ out:
int mount_mount(struct autofs_point *ap, const char *root, const char *name,
int name_len,
const char *what, const char *fstype, const char *options, void
*context)
{
- char *fullpath;
+ char fullpath[PATH_MAX];
char buf[MAX_ERR_BUF];
int err;
int i, len;
@@ -82,14 +82,11 @@ int mount_mount(struct autofs_point *ap, const char *root,
const char *name, int
/* Root offset of multi-mount */
len = strlen(root);
if (root[len - 1] == '/') {
- fullpath = alloca(len);
len = snprintf(fullpath, len, "%s", root);
/* Direct mount name is absolute path so don't use root */
} else if (*name == '/') {
- fullpath = alloca(len + 1);
len = sprintf(fullpath, "%s", root);
} else {
- fullpath = alloca(len + name_len + 2);
len = sprintf(fullpath, "%s/%s", root, name);
}
fullpath[len] = '\0';
@@ -143,7 +140,7 @@ int mount_mount(struct autofs_point *ap, const char *root,
const char *name, int
}
} else {
char *cp;
- char *basepath = alloca(strlen(fullpath) + 1);
+ char basepath[PATH_MAX];
int status;
struct stat st;
diff --git a/modules/mount_changer.c b/modules/mount_changer.c
index 43b8355..bf77a98 100644
--- a/modules/mount_changer.c
+++ b/modules/mount_changer.c
@@ -46,7 +46,7 @@ int mount_init(void **context)
int mount_mount(struct autofs_point *ap, const char *root, const char *name,
int name_len,
const char *what, const char *fstype, const char *options, void
*context)
{
- char *fullpath;
+ char fullpath[PATH_MAX];
char buf[MAX_ERR_BUF];
int err;
int len, status, existed = 1;
@@ -59,14 +59,11 @@ int mount_mount(struct autofs_point *ap, const char *root,
const char *name, int
/* Root offset of multi-mount */
len = strlen(root);
if (root[len - 1] == '/') {
- fullpath = alloca(len);
len = snprintf(fullpath, len, "%s", root);
/* Direct mount name is absolute path so don't use root */
} else if (*name == '/') {
- fullpath = alloca(len + 1);
len = sprintf(fullpath, "%s", root);
} else {
- fullpath = alloca(len + name_len + 2);
len = sprintf(fullpath, "%s/%s", root, name);
}
fullpath[len] = '\0';
diff --git a/modules/mount_ext2.c b/modules/mount_ext2.c
index 4c5b271..a80ccba 100644
--- a/modules/mount_ext2.c
+++ b/modules/mount_ext2.c
@@ -38,7 +38,7 @@ int mount_init(void **context)
int mount_mount(struct autofs_point *ap, const char *root, const char *name,
int name_len,
const char *what, const char *fstype, const char *options, void
*context)
{
- char *fullpath;
+ char fullpath[PATH_MAX];
char buf[MAX_ERR_BUF];
const char *p, *p1;
int err, ro = 0;
@@ -51,14 +51,11 @@ int mount_mount(struct autofs_point *ap, const char *root,
const char *name, int
/* Root offset of multi-mount */
len = strlen(root);
if (root[len - 1] == '/') {
- fullpath = alloca(len);
len = snprintf(fullpath, len, "%s", root);
/* Direct mount name is absolute path so don't use root */
} else if (*name == '/') {
- fullpath = alloca(len + 1);
len = sprintf(fullpath, "%s", root);
} else {
- fullpath = alloca(len + name_len + 2);
len = sprintf(fullpath, "%s/%s", root, name);
}
fullpath[len] = '\0';
diff --git a/modules/mount_generic.c b/modules/mount_generic.c
index f094d07..17ebfd4 100644
--- a/modules/mount_generic.c
+++ b/modules/mount_generic.c
@@ -39,7 +39,7 @@ int mount_mount(struct autofs_point *ap, const char *root,
const char *name, int
const char *what, const char *fstype, const char *options,
void *context)
{
- char *fullpath;
+ char fullpath[PATH_MAX];
char buf[MAX_ERR_BUF];
int err;
int len, status, existed = 1;
@@ -50,14 +50,11 @@ int mount_mount(struct autofs_point *ap, const char *root,
const char *name, int
/* Root offset of multi-mount */
len = strlen(root);
if (root[len - 1] == '/') {
- fullpath = alloca(len);
len = snprintf(fullpath, len, "%s", root);
/* Direct mount name is absolute path so don't use root */
} else if (*name == '/') {
- fullpath = alloca(len + 1);
len = sprintf(fullpath, "%s", root);
} else {
- fullpath = alloca(len + name_len + 2);
len = sprintf(fullpath, "%s/%s", root, name);
}
fullpath[len] = '\0';
--
1.6.0.4
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