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Add find contitions to check for timestamps.

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This commit is contained in:
Vreixo Formoso 2008-03-04 00:53:25 +01:00
parent 6b583aa31f
commit d2a92bd0f6
2 changed files with 218 additions and 0 deletions
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154
libisofs/find.c
View File

@ -323,3 +323,157 @@ IsoFindCondition *iso_new_find_conditions_uid(uid_t uid)
return cond;
}
/*************** find by timestamps condition *****************/
struct cond_times
{
time_t time;
int what_time; /* 0 atime, 1 mtime, 2 ctime */
enum iso_find_comparisons comparison;
};
static
int cond_time_matches(IsoFindCondition *cond, IsoNode *node)
{
time_t node_time;
struct cond_times *data = cond->data;
switch (data->what_time) {
case 0: node_time = node->atime; break;
case 1: node_time = node->mtime; break;
default: node_time = node->ctime; break;
}
switch (data->comparison) {
case ISO_FIND_COND_GREATER:
return node_time > data->time ? 1 : 0;
case ISO_FIND_COND_GREATER_OR_EQUAL:
return node_time >= data->time ? 1 : 0;
case ISO_FIND_COND_EQUAL:
return node_time == data->time ? 1 : 0;
case ISO_FIND_COND_LESS:
return node_time < data->time ? 1 : 0;
case ISO_FIND_COND_LESS_OR_EQUAL:
return node_time <= data->time ? 1 : 0;
}
/* should never happen */
return 0;
}
static
void cond_time_free(IsoFindCondition *cond)
{
free(cond->data);
}
/**
* Create a new condition that checks the time of last access.
*
* @param time
* Time to compare against IsoNode atime.
* @param comparison
* Comparison to be done between IsoNode atime and submitted time.
* Note that ISO_FIND_COND_GREATER, for example, is true if the node
* time is greater than the submitted time.
* @result
* The created IsoFindCondition, NULL on error.
*
* @since 0.6.4
*/
IsoFindCondition *iso_new_find_conditions_atime(time_t time,
enum iso_find_comparisons comparison)
{
IsoFindCondition *cond;
struct cond_times *data;
cond = malloc(sizeof(IsoFindCondition));
if (cond == NULL) {
return NULL;
}
data = malloc(sizeof(struct cond_times));
if (data == NULL) {
free(cond);
return NULL;
}
data->time = time;
data->comparison = comparison;
data->what_time = 0; /* atime */
cond->data = data;
cond->free = cond_time_free;
cond->matches = cond_time_matches;
return cond;
}
/**
* Create a new condition that checks the time of last modification.
*
* @param time
* Time to compare against IsoNode mtime.
* @param comparison
* Comparison to be done between IsoNode mtime and submitted time.
* Note that ISO_FIND_COND_GREATER, for example, is true if the node
* time is greater than the submitted time.
* @result
* The created IsoFindCondition, NULL on error.
*
* @since 0.6.4
*/
IsoFindCondition *iso_new_find_conditions_mtime(time_t time,
enum iso_find_comparisons comparison)
{
IsoFindCondition *cond;
struct cond_times *data;
cond = malloc(sizeof(IsoFindCondition));
if (cond == NULL) {
return NULL;
}
data = malloc(sizeof(struct cond_times));
if (data == NULL) {
free(cond);
return NULL;
}
data->time = time;
data->comparison = comparison;
data->what_time = 1; /* mtime */
cond->data = data;
cond->free = cond_time_free;
cond->matches = cond_time_matches;
return cond;
}
/**
* Create a new condition that checks the time of last status change.
*
* @param time
* Time to compare against IsoNode ctime.
* @param comparison
* Comparison to be done between IsoNode ctime and submitted time.
* Note that ISO_FIND_COND_GREATER, for example, is true if the node
* time is greater than the submitted time.
* @result
* The created IsoFindCondition, NULL on error.
*
* @since 0.6.4
*/
IsoFindCondition *iso_new_find_conditions_ctime(time_t time,
enum iso_find_comparisons comparison)
{
IsoFindCondition *cond;
struct cond_times *data;
cond = malloc(sizeof(IsoFindCondition));
if (cond == NULL) {
return NULL;
}
data = malloc(sizeof(struct cond_times));
if (data == NULL) {
free(cond);
return NULL;
}
data->time = time;
data->comparison = comparison;
data->what_time = 2; /* ctime */
cond->data = data;
cond->free = cond_time_free;
cond->matches = cond_time_matches;
return cond;
}

64
libisofs/libisofs.h
View File

@ -2225,6 +2225,70 @@ IsoFindCondition *iso_new_find_conditions_gid(gid_t gid);
*/
IsoFindCondition *iso_new_find_conditions_uid(uid_t uid);
/**
* Possible comparison between IsoNode and given conditions.
*
* @since 0.6.4
*/
enum iso_find_comparisons {
ISO_FIND_COND_GREATER,
ISO_FIND_COND_GREATER_OR_EQUAL,
ISO_FIND_COND_EQUAL,
ISO_FIND_COND_LESS,
ISO_FIND_COND_LESS_OR_EQUAL
};
/**
* Create a new condition that checks the time of last access.
*
* @param time
* Time to compare against IsoNode atime.
* @param comparison
* Comparison to be done between IsoNode atime and submitted time.
* Note that ISO_FIND_COND_GREATER, for example, is true if the node
* time is greater than the submitted time.
* @result
* The created IsoFindCondition, NULL on error.
*
* @since 0.6.4
*/
IsoFindCondition *iso_new_find_conditions_atime(time_t time,
enum iso_find_comparisons comparison);
/**
* Create a new condition that checks the time of last modification.
*
* @param time
* Time to compare against IsoNode mtime.
* @param comparison
* Comparison to be done between IsoNode mtime and submitted time.
* Note that ISO_FIND_COND_GREATER, for example, is true if the node
* time is greater than the submitted time.
* @result
* The created IsoFindCondition, NULL on error.
*
* @since 0.6.4
*/
IsoFindCondition *iso_new_find_conditions_mtime(time_t time,
enum iso_find_comparisons comparison);
/**
* Create a new condition that checks the time of last status change.
*
* @param time
* Time to compare against IsoNode ctime.
* @param comparison
* Comparison to be done between IsoNode ctime and submitted time.
* Note that ISO_FIND_COND_GREATER, for example, is true if the node
* time is greater than the submitted time.
* @result
* The created IsoFindCondition, NULL on error.
*
* @since 0.6.4
*/
IsoFindCondition *iso_new_find_conditions_ctime(time_t time,
enum iso_find_comparisons comparison);
/**
* Find all directory children that match the given condition.
*