libburnia/libisofs
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Base tree add functions in low level node new functions.

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This commit is contained in:
Vreixo Formoso 2008-01-26 16:30:05 +01:00
parent ea45f858cb
commit bd893a8cfa
3 changed files with 51 additions and 86 deletions
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8
src/node.c
View File

@ -632,6 +632,12 @@ int iso_node_is_valid_name(const char *name)
return 1;
}
/**
* Check if a given path is valid for the destination of a link.
*
* @return
* 1 if yes, 0 if not
*/
int iso_node_is_valid_link_dest(const char *dest)
{
int ret;
@ -710,7 +716,7 @@ int iso_dir_insert(IsoDir *dir, IsoNode *node, IsoNode **pos,
return dir->nchildren;
} else {
/* CAN'T HAPPEN */
return ISO_WRONG_ARG_VALUE;
return ISO_ASSERT_FAILURE;
}
}

127
src/tree.c
View File

@ -46,6 +46,8 @@
*/
int iso_tree_add_new_dir(IsoDir *parent, const char *name, IsoDir **dir)
{
int ret;
char *n;
IsoDir *node;
IsoNode **pos;
time_t now;
@ -57,41 +59,30 @@ int iso_tree_add_new_dir(IsoDir *parent, const char *name, IsoDir **dir)
*dir = NULL;
}
/* check if the name is valid */
if (!iso_node_is_valid_name(name)) {
return ISO_WRONG_ARG_VALUE;
}
/* find place where to insert and check if it exists */
if (iso_dir_exists(parent, name, &pos)) {
/* a node with same name already exists */
return ISO_NODE_NAME_NOT_UNIQUE;
}
node = calloc(1, sizeof(IsoDir));
if (node == NULL) {
return ISO_OUT_OF_MEM;
}
node->node.refcount = 1;
node->node.type = LIBISO_DIR;
node->node.name = strdup(name);
if (node->node.name == NULL) {
free(node);
return ISO_OUT_OF_MEM;
n = strdup(name);
ret = iso_node_new_dir(n, &node);
if (ret < 0) {
free(n);
return ret;
}
/* permissions from parent */
node->node.mode = parent->node.mode;
node->node.uid = parent->node.uid;
node->node.gid = parent->node.gid;
node->node.hidden = parent->node.hidden;
iso_node_set_permissions((IsoNode*)node, parent->node.mode);
iso_node_set_uid((IsoNode*)node, parent->node.uid);
iso_node_set_gid((IsoNode*)node, parent->node.gid);
iso_node_set_hidden((IsoNode*)node, parent->node.hidden);
/* current time */
now = time(NULL);
node->node.atime = now;
node->node.ctime = now;
node->node.mtime = now;
iso_node_set_atime((IsoNode*)node, now);
iso_node_set_ctime((IsoNode*)node, now);
iso_node_set_mtime((IsoNode*)node, now);
if (dir) {
*dir = node;
@ -128,6 +119,8 @@ int iso_tree_add_new_dir(IsoDir *parent, const char *name, IsoDir **dir)
int iso_tree_add_new_symlink(IsoDir *parent, const char *name,
const char *dest, IsoSymlink **link)
{
int ret;
char *n, *d;
IsoSymlink *node;
IsoNode **pos;
time_t now;
@ -139,54 +132,32 @@ int iso_tree_add_new_symlink(IsoDir *parent, const char *name,
*link = NULL;
}
/* check if the name is valid */
if (!iso_node_is_valid_name(name)) {
return ISO_WRONG_ARG_VALUE;
}
/* check if destination is valid */
if (!iso_node_is_valid_link_dest(dest)) {
/* guard against null or empty dest */
return ISO_WRONG_ARG_VALUE;
}
/* find place where to insert */
if (iso_dir_exists(parent, name, &pos)) {
/* a node with same name already exists */
return ISO_NODE_NAME_NOT_UNIQUE;
}
node = calloc(1, sizeof(IsoSymlink));
if (node == NULL) {
return ISO_OUT_OF_MEM;
}
node->node.refcount = 1;
node->node.type = LIBISO_SYMLINK;
node->node.name = strdup(name);
if (node->node.name == NULL) {
free(node);
return ISO_OUT_OF_MEM;
}
node->dest = strdup(dest);
if (node->dest == NULL) {
free(node->node.name);
free(node);
return ISO_OUT_OF_MEM;
n = strdup(name);
d = strdup(dest);
ret = iso_node_new_symlink(n, d, &node);
if (ret < 0) {
free(n);
free(d);
return ret;
}
/* permissions from parent */
node->node.mode = S_IFLNK | 0777;
node->node.uid = parent->node.uid;
node->node.gid = parent->node.gid;
node->node.hidden = parent->node.hidden;
iso_node_set_permissions((IsoNode*)node, 0777);
iso_node_set_uid((IsoNode*)node, parent->node.uid);
iso_node_set_gid((IsoNode*)node, parent->node.gid);
iso_node_set_hidden((IsoNode*)node, parent->node.hidden);
/* current time */
now = time(NULL);
node->node.atime = now;
node->node.ctime = now;
node->node.mtime = now;
iso_node_set_atime((IsoNode*)node, now);
iso_node_set_ctime((IsoNode*)node, now);
iso_node_set_mtime((IsoNode*)node, now);
if (link) {
*link = node;
@ -237,6 +208,8 @@ int iso_tree_add_new_symlink(IsoDir *parent, const char *name,
int iso_tree_add_new_special(IsoDir *parent, const char *name, mode_t mode,
dev_t dev, IsoSpecial **special)
{
int ret;
char *n;
IsoSpecial *node;
IsoNode **pos;
time_t now;
@ -251,43 +224,29 @@ int iso_tree_add_new_special(IsoDir *parent, const char *name, mode_t mode,
*special = NULL;
}
/* check if the name is valid */
if (!iso_node_is_valid_name(name)) {
return ISO_WRONG_ARG_VALUE;
}
/* find place where to insert */
if (iso_dir_exists(parent, name, &pos)) {
/* a node with same name already exists */
return ISO_NODE_NAME_NOT_UNIQUE;
}
node = calloc(1, sizeof(IsoSpecial));
if (node == NULL) {
return ISO_OUT_OF_MEM;
n = strdup(name);
ret = iso_node_new_special(n, mode, dev, &node);
if (ret < 0) {
free(n);
return ret;
}
node->node.refcount = 1;
node->node.type = LIBISO_SPECIAL;
node->node.name = strdup(name);
if (node->node.name == NULL) {
free(node);
return ISO_OUT_OF_MEM;
}
node->node.mode = mode;
node->dev = dev;
/* atts from parent */
node->node.uid = parent->node.uid;
node->node.gid = parent->node.gid;
node->node.hidden = parent->node.hidden;
iso_node_set_uid((IsoNode*)node, parent->node.uid);
iso_node_set_gid((IsoNode*)node, parent->node.gid);
iso_node_set_hidden((IsoNode*)node, parent->node.hidden);
/* current time */
now = time(NULL);
node->node.atime = now;
node->node.ctime = now;
node->node.mtime = now;
iso_node_set_atime((IsoNode*)node, now);
iso_node_set_ctime((IsoNode*)node, now);
iso_node_set_mtime((IsoNode*)node, now);
if (special) {
*special = node;