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fix /proc/pid/mem, /proc/pid/status, /proc/pid/cmdline

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This commit is contained in:
Tomoki Shirasawa
2015-07-02 00:22:35 +09:00
parent fa79db3bcc
commit 59ee251e1c
8 changed files with 207 additions and 190 deletions
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198
kernel/syscall.c
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@@ -2034,9 +2034,31 @@ SYSCALL_DECLARE(tgkill)
return do_kill(tgid, tid, sig, &info, 0);
}
void
do_setresuid(int ruid, int euid, int suid, int fsuid)
int *
getcred(int *_buf)
{
int *buf;
struct syscall_request request IHK_DMA_ALIGN;
unsigned long phys;
if(((unsigned long)_buf) & ((unsigned long)(_buf + 8)) & ~4095)
buf = _buf + 8;
else
buf = _buf;
phys = virt_to_phys(buf);
request.number = __NR_setfsuid;
request.args[0] = phys;
request.args[1] = 1;
do_syscall(&request, ihk_mc_get_processor_id(), 0);
return buf;
}
void
do_setresuid()
{
int _buf[16];
int *buf;
struct process *proc = cpu_local_var(current);
int pid = proc->ftn->pid;
struct cpu_local_var *v;
@@ -2044,21 +2066,17 @@ do_setresuid(int ruid, int euid, int suid, int fsuid)
int i;
unsigned long irqstate;
buf = getcred(_buf);
for(i = 0; i < num_processors; i++){
v = get_cpu_local_var(i);
irqstate = ihk_mc_spinlock_lock(&(v->runq_lock));
list_for_each_entry(p, &(v->runq), sched_list){
if(p->ftn->pid == pid){
if(ruid != -1)
p->ftn->ruid = ruid;
if(euid != -1)
p->ftn->euid = euid;
if(suid != -1)
p->ftn->suid = suid;
#if 0
if(fsuid != -1)
p->ftn->fsuid = fsuid;
#endif
p->ftn->ruid = buf[0];
p->ftn->euid = buf[1];
p->ftn->suid = buf[2];
p->ftn->fsuid = buf[3];
}
}
ihk_mc_spinlock_unlock(&(v->runq_lock), irqstate);
@@ -2066,8 +2084,10 @@ do_setresuid(int ruid, int euid, int suid, int fsuid)
}
void
do_setresgid(int rgid, int egid, int sgid, int fsgid)
do_setresgid()
{
int _buf[16];
int *buf;
struct process *proc = cpu_local_var(current);
int pid = proc->ftn->pid;
struct cpu_local_var *v;
@@ -2075,21 +2095,17 @@ do_setresgid(int rgid, int egid, int sgid, int fsgid)
int i;
unsigned long irqstate;
buf = getcred(_buf);
for(i = 0; i < num_processors; i++){
v = get_cpu_local_var(i);
irqstate = ihk_mc_spinlock_lock(&(v->runq_lock));
list_for_each_entry(p, &(v->runq), sched_list){
if(p->ftn->pid == pid){
if(rgid != -1)
p->ftn->rgid = rgid;
if(egid != -1)
p->ftn->egid = egid;
if(sgid != -1)
p->ftn->sgid = sgid;
#if 0
if(fsgid != -1)
p->ftn->fsgid = fsgid;
#endif
p->ftn->rgid = buf[4];
p->ftn->egid = buf[5];
p->ftn->sgid = buf[6];
p->ftn->fsgid = buf[7];
}
}
ihk_mc_spinlock_unlock(&(v->runq_lock), irqstate);
@@ -2098,184 +2114,96 @@ do_setresgid(int rgid, int egid, int sgid, int fsgid)
SYSCALL_DECLARE(setresuid)
{
int ruid = ihk_mc_syscall_arg0(ctx);
int euid = ihk_mc_syscall_arg1(ctx);
int suid = ihk_mc_syscall_arg2(ctx);
int rc;
rc = syscall_generic_forwarding(__NR_setresuid, ctx);
if(rc == 0){
struct syscall_request request IHK_DMA_ALIGN;
int fsuid = 0;
request.number = __NR_setfsuid;
request.args[0] = -1;
#if 0
fsuid = do_syscall(&request, ihk_mc_get_processor_id(), 0);
#endif
do_setresuid(ruid, euid, suid, fsuid);
do_setresuid();
}
return rc;
}
SYSCALL_DECLARE(setreuid)
{
int ruid = ihk_mc_syscall_arg0(ctx);
int euid = ihk_mc_syscall_arg1(ctx);
int suid = -1;
int rc;
struct process *proc = cpu_local_var(current);
// int euid_bak = proc->ftn->euid;
int ruid_bak = proc->ftn->ruid;
rc = syscall_generic_forwarding(__NR_setreuid, ctx);
if(rc == 0){
struct syscall_request request IHK_DMA_ALIGN;
int fsuid = 0;
if(euid != -1){
if(euid != ruid_bak){
suid = euid;
}
}
else if(ruid != -1){
}
request.number = __NR_setfsuid;
request.args[0] = -1;
#if 0
fsuid = do_syscall(&request, ihk_mc_get_processor_id(), 0);
#endif
do_setresuid(ruid, euid, suid, fsuid);
do_setresuid();
}
return rc;
}
SYSCALL_DECLARE(setuid)
{
int euid = ihk_mc_syscall_arg0(ctx);
int ruid = -1;
int suid = -1;
long rc;
struct process *proc = cpu_local_var(current);
int euid_bak = proc->ftn->euid;
rc = syscall_generic_forwarding(__NR_setuid, ctx);
if(rc == 0){
struct syscall_request request IHK_DMA_ALIGN;
int fsuid = 0;
if(euid_bak == 0){
ruid = euid;
suid = euid;
}
request.number = __NR_setfsuid;
request.args[0] = -1;
#if 0
fsuid = do_syscall(&request, ihk_mc_get_processor_id(), 0);
#endif
do_setresuid(ruid, euid, suid, fsuid);
do_setresuid();
}
return rc;
}
SYSCALL_DECLARE(setfsuid)
{
int fsuid;
int fsuid = (int)ihk_mc_syscall_arg0(ctx);;
unsigned long newfsuid;
struct syscall_request request IHK_DMA_ALIGN;
fsuid = syscall_generic_forwarding(__NR_setfsuid, ctx);
do_setresuid(-1, -1, -1, fsuid);
return fsuid;
request.number = __NR_setfsuid;
request.args[0] = fsuid;
request.args[1] = 0;
newfsuid = do_syscall(&request, ihk_mc_get_processor_id(), 0);
do_setresuid();
return newfsuid;
}
SYSCALL_DECLARE(setresgid)
{
int rgid = ihk_mc_syscall_arg0(ctx);
int egid = ihk_mc_syscall_arg1(ctx);
int sgid = ihk_mc_syscall_arg2(ctx);
int rc;
rc = syscall_generic_forwarding(__NR_setresgid, ctx);
if(rc == 0){
struct syscall_request request IHK_DMA_ALIGN;
int fsgid = 0;
request.number = __NR_setfsgid;
request.args[0] = -1;
#if 0
fsgid = do_syscall(&request, ihk_mc_get_processor_id(), 0);
#endif
do_setresgid(rgid, egid, sgid, fsgid);
do_setresgid();
}
return rc;
}
SYSCALL_DECLARE(setregid)
{
int rgid = ihk_mc_syscall_arg0(ctx);
int egid = ihk_mc_syscall_arg1(ctx);
int sgid = -1;
int rc;
struct process *proc = cpu_local_var(current);
// int egid_bak = proc->ftn->egid;
int rgid_bak = proc->ftn->rgid;
rc = syscall_generic_forwarding(__NR_setregid, ctx);
if(rc == 0){
struct syscall_request request IHK_DMA_ALIGN;
int fsgid = 0;
if(egid != -1){
if(egid != rgid_bak){
sgid = egid;
}
}
else if(rgid != -1){
}
request.number = __NR_setfsgid;
request.args[0] = -1;
#if 0
fsgid = do_syscall(&request, ihk_mc_get_processor_id(), 0);
#endif
do_setresgid(rgid, egid, sgid, fsgid);
do_setresgid();
}
return rc;
}
SYSCALL_DECLARE(setgid)
{
int egid = ihk_mc_syscall_arg0(ctx);
int rgid = -1;
int sgid = -1;
long rc;
struct process *proc = cpu_local_var(current);
int egid_bak = proc->ftn->egid;
rc = syscall_generic_forwarding(__NR_setgid, ctx);
if(rc == 0){
struct syscall_request request IHK_DMA_ALIGN;
int fsgid = 0;
if(egid_bak == 0){
rgid = egid;
sgid = egid;
}
request.number = __NR_setfsgid;
request.args[0] = -1;
#if 0
fsgid = do_syscall(&request, ihk_mc_get_processor_id(), 0);
#endif
do_setresgid(rgid, egid, sgid, fsgid);
do_setresgid();
}
return rc;
}
SYSCALL_DECLARE(setfsgid)
{
int fsgid;
int fsgid = (int)ihk_mc_syscall_arg0(ctx);;
unsigned long newfsgid;
struct syscall_request request IHK_DMA_ALIGN;
fsgid = syscall_generic_forwarding(__NR_setfsgid, ctx);
do_setresgid(-1, -1, -1, fsgid);
return fsgid;
request.number = __NR_setfsuid;
request.args[0] = fsgid;
request.args[1] = 0;
newfsgid = do_syscall(&request, ihk_mc_get_processor_id(), 0);
do_setresgid();
return newfsgid;
}
SYSCALL_DECLARE(getuid)