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mcctrl: denote full path in /proc/PID/exe

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This commit is contained in:
Balazs Gerofi
2016-01-26 16:15:44 +09:00
parent f093786bec
commit da0a91b9f7
1 changed files with 29 additions and 4 deletions
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33
executer/kernel/mcctrl/control.c
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@ -838,16 +838,33 @@ int mcexec_open_exec(ihk_os_t os, char * __user filename)
struct mckernel_exec_file *mcef_iter;
int retval;
int os_ind = ihk_host_os_get_index(os);
char proc_name[1024];
char *proc_name, *pathbuf, *fullpath;
if (os_ind < 0) {
return EINVAL;
}
pathbuf = kmalloc(PATH_MAX, GFP_TEMPORARY);
if (!pathbuf) {
return ENOMEM;
}
proc_name = kmalloc(PATH_MAX, GFP_TEMPORARY);
if (!proc_name) {
retval = ENOMEM;
goto out_error_free_path;
}
file = open_exec(filename);
retval = PTR_ERR(file);
if (IS_ERR(file)) {
goto out_return;
goto out_error_free;
}
fullpath = d_path(&file->f_path, pathbuf, PATH_MAX);
if (IS_ERR(fullpath)) {
retval = PTR_ERR(fullpath);
goto out_error_free;
}
mcef = kmalloc(sizeof(*mcef), GFP_KERNEL);
@ -881,18 +898,26 @@ int mcexec_open_exec(ihk_os_t os, char * __user filename)
/* Create /proc/self/exe entry */
if (procfs_create_entry(os, 0, os_ind, current->tgid, proc_name,
S_IFLNK, filename) != 0) {
S_IFLNK, fullpath) != 0) {
printk("ERROR: could not create a procfs entry for %s.\n", proc_name);
}
spin_unlock(&mckernel_exec_file_lock);
dprintk("%d open_exec and holding file: %s\n", (int)current->tgid, filename);
kfree(proc_name);
kfree(pathbuf);
return 0;
out_put_file:
fput(file);
out_return:
out_error_free:
kfree(proc_name);
out_error_free_path:
kfree(pathbuf);
return -retval;
}