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implement single directory garbage collector

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This commit is contained in:
Sascha Schumann 1999-09-04 08:20:43 +00:00
parent 43523e9854
commit 7e50dda96b
1 changed files with 49 additions and 1 deletions
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50
ext/session/mod_files.c
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@ -26,12 +26,18 @@
#include <sys/file.h>
#endif
#if HAVE_DIRENT_H
#include <dirent.h>
#endif
#include <fcntl.h>
#include "php_session.h"
#include "mod_files.h"
#include "ext/standard/flock_compat.h"
#define FILE_PREFIX "sess_"
typedef struct {
int fd;
char *lastkey;
@ -102,7 +108,7 @@ static void _ps_files_open(ps_files *data, const char *key)
keylen = strlen(key);
if(keylen <= data->dirdepth || MAXPATHLEN <
(strlen(data->basedir) + 2 * data->dirdepth + keylen + 5))
(strlen(data->basedir) + 2 * data->dirdepth + keylen + 5 + sizeof(FILE_PREFIX)))
return;
p = key;
n = sprintf(buf, "%s/", data->basedir);
@ -110,6 +116,7 @@ static void _ps_files_open(ps_files *data, const char *key)
buf[n++] = *p++;
buf[n++] = DIR_DELIMITER;
}
strcat(buf, FILE_PREFIX);
strcat(buf, p);
data->lastkey = estrdup(key);
@ -186,8 +193,49 @@ PS_DESTROY_FUNC(files)
return SUCCESS;
}
static void ps_files_cleanup_dir(const char *dirname, int maxlifetime)
{
DIR *dir;
struct dirent *entry;
struct stat sbuf;
char buf[MAXPATHLEN];
time_t now;
dir = opendir(dirname);
if(!dir) return;
time(&now);
while((entry = readdir(dir))) {
/* does the file start with our prefix? */
if(!strncmp(entry->d_name, FILE_PREFIX, sizeof(FILE_PREFIX) - 1) &&
/* create full path */
snprintf(buf, MAXPATHLEN, "%s%c%s", dirname, DIR_DELIMITER,
entry->d_name) > 0 &&
/* stat the directory entry */
stat(buf, &sbuf) == 0 &&
/* is it expired? */
(now - sbuf.st_atime) > maxlifetime) {
unlink(buf);
}
}
closedir(dir);
}
PS_GC_FUNC(files)
{
PS_FILES_DATA;
/* we don't perform any cleanup, if dirdepth is larger than 0.
we return SUCCESS, since all cleanup should be handled by
an external entity (i.e. find -ctime x | xargs rm) */
if(data->dirdepth > 0) {
return SUCCESS;
}
ps_files_cleanup_dir(data->basedir, maxlifetime);
return SUCCESS;
}