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procfs: chown procfs entries (temporary hack)

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refs #651
refs #699
This commit is contained in:
Tomoki Shirasawa
2016-01-28 16:29:46 +09:00
parent 1ffe740153
commit fdf031ac16
1 changed files with 16 additions and 5 deletions
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21
executer/kernel/mcctrl/procfs.c
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@ -104,7 +104,7 @@ static const struct file_operations mckernel_procfs_file_operations = {
* ancestor directory which was not explicitly created were racing.
*/
struct procfs_list_entry *get_procfs_list_entry(char *p, int osnum, int mode, void *opaque)
struct procfs_list_entry *get_procfs_list_entry(char *p, int osnum, int mode, void *opaque, const struct cred *cred)
{
char *r;
struct proc_dir_entry *pde = NULL;
@ -134,7 +134,7 @@ struct procfs_list_entry *get_procfs_list_entry(char *p, int osnum, int mode, vo
/* We have non-null parent dir. */
strncpy(name, p, r - p);
name[r - p] = '\0';
parent = get_procfs_list_entry(name, osnum, 0, NULL);
parent = get_procfs_list_entry(name, osnum, 0, NULL, cred);
if (parent == NULL) {
/* We counld not get a parent procfs entry. Give up.*/
return NULL;
@ -170,6 +170,8 @@ struct procfs_list_entry *get_procfs_list_entry(char *p, int osnum, int mode, vo
pde = proc_create_data(name, mode, parent->entry,
&mckernel_procfs_file_operations, ret);
#endif
if(pde && cred)
proc_set_user(pde, cred->uid, cred->gid);
}
if (pde == NULL) {
kprintf("ERROR: cannot create a PROCFS entry for %s.\n", p);
@ -204,11 +206,11 @@ struct procfs_list_entry *get_procfs_list_entry(char *p, int osnum, int mode, vo
*/
int procfs_create_entry(void *os, int ref, int osnum, int pid, char *name,
int mode, void *opaque)
int mode, void *opaque, const struct cred *cred)
{
struct procfs_list_entry *e;
e = get_procfs_list_entry(name, osnum, mode, opaque);
e = get_procfs_list_entry(name, osnum, mode, opaque, cred);
if (e == NULL) {
printk("ERROR: could not create a procfs entry for %s.\n", name);
return EINVAL;
@ -238,6 +240,15 @@ void procfs_create(void *__os, int ref, int osnum, int pid, unsigned long arg)
struct procfs_file *f;
int mode;
char name[PROCFS_NAME_MAX];
struct task_struct *task = NULL;
const struct cred *tcred = NULL;
if(pid > 0){
task = pid_task(find_vpid(pid), PIDTYPE_PID);
if(task){
tcred = __task_cred(task);
}
}
dprintk("procfs_create: osnum: %d, cpu: %d, pid: %d\n", osnum, ref, pid);
@ -254,7 +265,7 @@ void procfs_create(void *__os, int ref, int osnum, int pid, unsigned long arg)
goto quit;
}
if (procfs_create_entry(__os, ref, osnum, pid, name, mode, NULL) != 0) {
if (procfs_create_entry(__os, ref, osnum, pid, name, mode, NULL, tcred) != 0) {
printk("ERROR: could not create a procfs entry for %s.\n", name);
goto quit;
}