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proc_root.h
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proc_root.h
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#ifndef PROC_ROOT_H_
#define PROC_ROOT_H_
#include <linux/ctype.h>
#include <linux/cred.h>
#include "proc_root_auto_offset.h"
#include "ver_control.h"
//声明
//////////////////////////////////////////////////////////////////////////
MY_STATIC inline int get_proc_group(struct pid* proc_pid_struct,
size_t *npOutUID,
size_t *npOutSUID,
size_t *npOutEUID,
size_t *npOutFSUID,
size_t *npOutGID,
size_t *npOutSGID,
size_t *npOutEGID,
size_t *npOutFSGID);
MY_STATIC inline int set_proc_root(struct pid* proc_pid_struct);
//实现
//////////////////////////////////////////////////////////////////////////
MY_STATIC inline int get_proc_group(struct pid* proc_pid_struct,
size_t *npOutUID,
size_t *npOutSUID,
size_t *npOutEUID,
size_t *npOutFSUID,
size_t *npOutGID,
size_t *npOutSGID,
size_t *npOutEGID,
size_t *npOutFSGID) {
if (g_init_real_cred_offset_success == false) {
return -ENOENT;
}
if (g_init_real_cred_offset_success) {
struct task_struct * task = NULL;
struct cred * real_cred = NULL;
struct cred * cred = NULL;
char *pCred = NULL;
task = pid_task(proc_pid_struct, PIDTYPE_PID);
if (!task) { return -1; }
pCred = (char*)&task->real_cred;
pCred += g_real_cred_offset_proc_root;
real_cred = (struct cred *)*(size_t*)pCred;
pCred += sizeof(void*);
cred = (struct cred *)*(size_t*)pCred;
if (!real_cred && !cred) { return -2; }
memset(npOutUID, 0xFF, sizeof(*npOutUID));
memset(npOutSUID, 0xFF, sizeof(*npOutSUID));
memset(npOutEUID, 0xFF, sizeof(*npOutEUID));
memset(npOutFSUID, 0xFF, sizeof(*npOutFSUID));
memset(npOutGID, 0xFF, sizeof(*npOutGID));
memset(npOutSGID, 0xFF, sizeof(*npOutSGID));
memset(npOutEGID, 0xFF, sizeof(*npOutEGID));
memset(npOutFSGID, 0xFF, sizeof(*npOutFSGID));
if (real_cred) {
unsigned int tmp = 0;
memcpy(&tmp, &real_cred->uid, sizeof(tmp));
*npOutUID = (size_t)tmp;
memcpy(&tmp, &real_cred->suid, sizeof(tmp));
*npOutSUID = (size_t)tmp;
memcpy(&tmp, &real_cred->euid, sizeof(tmp));
*npOutEUID = (size_t)tmp;
memcpy(&tmp, &real_cred->fsuid, sizeof(tmp));
*npOutFSUID = (size_t)tmp;
memcpy(&tmp, &real_cred->gid, sizeof(tmp));
*npOutGID = (size_t)tmp;
memcpy(&tmp, &real_cred->sgid, sizeof(tmp));
*npOutSGID = (size_t)tmp;
memcpy(&tmp, &real_cred->egid, sizeof(tmp));
*npOutEGID = (size_t)tmp;
memcpy(&tmp, &real_cred->fsgid, sizeof(tmp));
*npOutFSGID = (size_t)tmp;
}
return 0;
}
return -ESPIPE;
}
MY_STATIC inline int set_proc_root(struct pid* proc_pid_struct) {
if (g_init_real_cred_offset_success == false) {
return -ENOENT;
}
if (g_init_real_cred_offset_success) {
struct task_struct * task = NULL;
struct cred * real_cred = NULL;
struct cred * cred = NULL;
char *pCred = NULL;
task = pid_task(proc_pid_struct, PIDTYPE_PID);
if (!task) { return -1; }
pCred = (char*)&task->real_cred;
pCred += g_real_cred_offset_proc_root;
real_cred = (struct cred *)*(size_t*)pCred;
pCred += sizeof(void*);
cred = (struct cred *)*(size_t*)pCred;
if (!real_cred && !cred) { return -2; }
if (real_cred) {
real_cred->uid = real_cred->suid = real_cred->euid = real_cred->fsuid = GLOBAL_ROOT_UID;
real_cred->gid = real_cred->sgid = real_cred->egid = real_cred->fsgid = GLOBAL_ROOT_GID;
memset(&real_cred->cap_inheritable, 0xFF, sizeof(real_cred->cap_inheritable));
memset(&real_cred->cap_permitted, 0xFF, sizeof(real_cred->cap_permitted));
memset(&real_cred->cap_effective, 0xFF, sizeof(real_cred->cap_effective));
memset(&real_cred->cap_bset, 0xFF, sizeof(real_cred->cap_bset));
memset(&real_cred->cap_ambient, 0xFF, sizeof(real_cred->cap_ambient));
}
if (cred) {
cred->uid = cred->suid = cred->euid = cred->fsuid = GLOBAL_ROOT_UID;
cred->gid = cred->sgid = cred->egid = cred->fsgid = GLOBAL_ROOT_GID;
memset(&cred->cap_inheritable, 0xFF, sizeof(cred->cap_inheritable));
memset(&cred->cap_permitted, 0xFF, sizeof(cred->cap_permitted));
memset(&cred->cap_effective, 0xFF, sizeof(cred->cap_effective));
memset(&cred->cap_bset, 0xFF, sizeof(cred->cap_bset));
memset(&cred->cap_ambient, 0xFF, sizeof(cred->cap_ambient));
}
return 0;
}
return -ESPIPE;
}
#endif /* PROC_ROOT_H_ */