extern int sysctl_overcommit_ratio;
extern int sysctl_panic_on_oom;
extern int max_threads;
-extern int sysrq_enabled;
extern int core_uses_pid;
extern int suid_dumpable;
extern char core_pattern[];
extern int sg_big_buff;
#endif
#ifdef CONFIG_SYSVIPC
-static int proc_do_ipc_string(ctl_table *table, int write, struct file *filp,
+static int proc_ipc_dointvec(ctl_table *table, int write, struct file *filp,
+ void __user *buffer, size_t *lenp, loff_t *ppos);
+static int proc_ipc_doulongvec_minmax(ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos);
#endif
#ifdef CONFIG_SYSCTL_SYSCALL
static int parse_table(int __user *, int, void __user *, size_t __user *,
- void __user *, size_t, ctl_table *, void **);
+ void __user *, size_t, ctl_table *);
#endif
-static int proc_do_uts_string(ctl_table *table, int write, struct file *filp,
- void __user *buffer, size_t *lenp, loff_t *ppos);
+#ifdef CONFIG_SYSVIPC
+static int sysctl_ipc_data(ctl_table *table, int __user *name, int nlen,
+ void __user *oldval, size_t __user *oldlenp,
+ void __user *newval, size_t newlen);
+#endif
#ifdef CONFIG_PROC_SYSCTL
static int proc_do_cad_pid(ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos);
+static int proc_dointvec_taint(ctl_table *table, int write, struct file *filp,
+ void __user *buffer, size_t *lenp, loff_t *ppos);
#endif
static ctl_table root_table[];
int sysctl_legacy_va_layout;
#endif
+#ifdef CONFIG_SYSVIPC
+static void *get_ipc(ctl_table *table, int write)
+{
+ char *which = table->data;
+ struct ipc_namespace *ipc_ns = current->nsproxy->ipc_ns;
+ which = (which - (char *)&init_ipc_ns) + (char *)ipc_ns;
+ return which;
+}
+#else
+#define get_ipc(T,W) ((T)->data)
+#endif
+
/* /proc declarations: */
#ifdef CONFIG_PROC_SYSCTL
};
static ctl_table kern_table[] = {
-#ifndef CONFIG_UTS_NS
- {
- .ctl_name = KERN_OSTYPE,
- .procname = "ostype",
- .data = init_uts_ns.name.sysname,
- .maxlen = sizeof(init_uts_ns.name.sysname),
- .mode = 0444,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
- {
- .ctl_name = KERN_OSRELEASE,
- .procname = "osrelease",
- .data = init_uts_ns.name.release,
- .maxlen = sizeof(init_uts_ns.name.release),
- .mode = 0444,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
- {
- .ctl_name = KERN_VERSION,
- .procname = "version",
- .data = init_uts_ns.name.version,
- .maxlen = sizeof(init_uts_ns.name.version),
- .mode = 0444,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
- {
- .ctl_name = KERN_NODENAME,
- .procname = "hostname",
- .data = init_uts_ns.name.nodename,
- .maxlen = sizeof(init_uts_ns.name.nodename),
- .mode = 0644,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
- {
- .ctl_name = KERN_DOMAINNAME,
- .procname = "domainname",
- .data = init_uts_ns.name.domainname,
- .maxlen = sizeof(init_uts_ns.name.domainname),
- .mode = 0644,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
-#else /* !CONFIG_UTS_NS */
- {
- .ctl_name = KERN_OSTYPE,
- .procname = "ostype",
- .data = NULL,
- /* could maybe use __NEW_UTS_LEN here? */
- .maxlen = FIELD_SIZEOF(struct new_utsname, sysname),
- .mode = 0444,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
- {
- .ctl_name = KERN_OSRELEASE,
- .procname = "osrelease",
- .data = NULL,
- .maxlen = FIELD_SIZEOF(struct new_utsname, release),
- .mode = 0444,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
- {
- .ctl_name = KERN_VERSION,
- .procname = "version",
- .data = NULL,
- .maxlen = FIELD_SIZEOF(struct new_utsname, version),
- .mode = 0444,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
- {
- .ctl_name = KERN_NODENAME,
- .procname = "hostname",
- .data = NULL,
- .maxlen = FIELD_SIZEOF(struct new_utsname, nodename),
- .mode = 0644,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
- {
- .ctl_name = KERN_DOMAINNAME,
- .procname = "domainname",
- .data = NULL,
- .maxlen = FIELD_SIZEOF(struct new_utsname, domainname),
- .mode = 0644,
- .proc_handler = &proc_do_uts_string,
- .strategy = &sysctl_string,
- },
-#endif /* !CONFIG_UTS_NS */
{
.ctl_name = KERN_PANIC,
.procname = "panic",
.proc_handler = &proc_dostring,
.strategy = &sysctl_string,
},
+#ifdef CONFIG_PROC_SYSCTL
{
.ctl_name = KERN_TAINTED,
.procname = "tainted",
.data = &tainted,
.maxlen = sizeof(int),
- .mode = 0444,
- .proc_handler = &proc_dointvec,
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_taint,
},
+#endif
{
.ctl_name = KERN_CAP_BSET,
.procname = "cap-bound",
{
.ctl_name = KERN_SHMMAX,
.procname = "shmmax",
- .data = NULL,
- .maxlen = sizeof (size_t),
+ .data = &init_ipc_ns.shm_ctlmax,
+ .maxlen = sizeof (init_ipc_ns.shm_ctlmax),
.mode = 0644,
- .proc_handler = &proc_do_ipc_string,
+ .proc_handler = &proc_ipc_doulongvec_minmax,
+ .strategy = sysctl_ipc_data,
},
{
.ctl_name = KERN_SHMALL,
.procname = "shmall",
- .data = NULL,
- .maxlen = sizeof (size_t),
+ .data = &init_ipc_ns.shm_ctlall,
+ .maxlen = sizeof (init_ipc_ns.shm_ctlall),
.mode = 0644,
- .proc_handler = &proc_do_ipc_string,
+ .proc_handler = &proc_ipc_doulongvec_minmax,
+ .strategy = sysctl_ipc_data,
},
{
.ctl_name = KERN_SHMMNI,
.procname = "shmmni",
- .data = NULL,
- .maxlen = sizeof (int),
+ .data = &init_ipc_ns.shm_ctlmni,
+ .maxlen = sizeof (init_ipc_ns.shm_ctlmni),
.mode = 0644,
- .proc_handler = &proc_do_ipc_string,
+ .proc_handler = &proc_ipc_dointvec,
+ .strategy = sysctl_ipc_data,
},
{
.ctl_name = KERN_MSGMAX,
.procname = "msgmax",
- .data = NULL,
- .maxlen = sizeof (int),
+ .data = &init_ipc_ns.msg_ctlmax,
+ .maxlen = sizeof (init_ipc_ns.msg_ctlmax),
.mode = 0644,
- .proc_handler = &proc_do_ipc_string,
+ .proc_handler = &proc_ipc_dointvec,
+ .strategy = sysctl_ipc_data,
},
{
.ctl_name = KERN_MSGMNI,
.procname = "msgmni",
- .data = NULL,
- .maxlen = sizeof (int),
+ .data = &init_ipc_ns.msg_ctlmni,
+ .maxlen = sizeof (init_ipc_ns.msg_ctlmni),
.mode = 0644,
- .proc_handler = &proc_do_ipc_string,
+ .proc_handler = &proc_ipc_dointvec,
+ .strategy = sysctl_ipc_data,
},
{
.ctl_name = KERN_MSGMNB,
.procname = "msgmnb",
- .data = NULL,
- .maxlen = sizeof (int),
+ .data = &init_ipc_ns.msg_ctlmnb,
+ .maxlen = sizeof (init_ipc_ns.msg_ctlmnb),
.mode = 0644,
- .proc_handler = &proc_do_ipc_string,
+ .proc_handler = &proc_ipc_dointvec,
+ .strategy = sysctl_ipc_data,
},
{
.ctl_name = KERN_SEM,
.procname = "sem",
- .data = NULL,
+ .data = &init_ipc_ns.sem_ctls,
.maxlen = 4*sizeof (int),
.mode = 0644,
- .proc_handler = &proc_do_ipc_string,
+ .proc_handler = &proc_ipc_dointvec,
+ .strategy = sysctl_ipc_data,
},
#endif
#ifdef CONFIG_MAGIC_SYSRQ
{
.ctl_name = KERN_SYSRQ,
.procname = "sysrq",
- .data = &sysrq_enabled,
+ .data = &__sysrq_enabled,
.maxlen = sizeof (int),
.mode = 0644,
.proc_handler = &proc_dointvec,
{ .ctl_name = 0 }
};
-extern void init_irq_proc (void);
-
static DEFINE_SPINLOCK(sysctl_lock);
/* called under sysctl_lock */
{
#ifdef CONFIG_PROC_SYSCTL
register_proc_table(root_table, proc_sys_root, &root_table_header);
- init_irq_proc();
#endif
}
do {
struct ctl_table_header *head =
list_entry(tmp, struct ctl_table_header, ctl_entry);
- void *context = NULL;
if (!use_table(head))
continue;
spin_unlock(&sysctl_lock);
error = parse_table(name, nlen, oldval, oldlenp,
- newval, newlen, head->ctl_table,
- &context);
- kfree(context);
+ newval, newlen, head->ctl_table);
spin_lock(&sysctl_lock);
unuse_table(head);
static int parse_table(int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
void __user *newval, size_t newlen,
- ctl_table *table, void **context)
+ ctl_table *table)
{
int n;
repeat:
error = table->strategy(
table, name, nlen,
oldval, oldlenp,
- newval, newlen, context);
+ newval, newlen);
if (error)
return error;
}
}
error = do_sysctl_strategy(table, name, nlen,
oldval, oldlenp,
- newval, newlen, context);
+ newval, newlen);
return error;
}
}
int do_sysctl_strategy (ctl_table *table,
int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen, void **context)
+ void __user *newval, size_t newlen)
{
int op = 0, rc;
size_t len;
if (table->strategy) {
rc = table->strategy(table, name, nlen, oldval, oldlenp,
- newval, newlen, context);
+ newval, newlen);
if (rc < 0)
return rc;
if (rc > 0)
size_t count, loff_t *ppos)
{
int op;
- struct proc_dir_entry *de = PDE(file->f_dentry->d_inode);
+ struct proc_dir_entry *de = PDE(file->f_path.dentry->d_inode);
struct ctl_table *table;
size_t res;
ssize_t error = -ENOTDIR;
size_t len;
char __user *p;
char c;
-
- if (!data || !maxlen || !*lenp ||
- (*ppos && !write)) {
+
+ if (!data || !maxlen || !*lenp) {
*lenp = 0;
return 0;
}
-
+
if (write) {
len = 0;
p = buffer;
len = strlen(data);
if (len > maxlen)
len = maxlen;
+
+ if (*ppos > len) {
+ *lenp = 0;
+ return 0;
+ }
+
+ data += *ppos;
+ len -= *ppos;
+
if (len > *lenp)
len = *lenp;
if (len)
buffer, lenp, ppos);
}
-/*
- * Special case of dostring for the UTS structure. This has locks
- * to observe. Should this be in kernel/sys.c ????
- */
-
-#ifndef CONFIG_UTS_NS
-static int proc_do_uts_string(ctl_table *table, int write, struct file *filp,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- int r;
-
- if (!write) {
- down_read(&uts_sem);
- r=proc_dostring(table,0,filp,buffer,lenp, ppos);
- up_read(&uts_sem);
- } else {
- down_write(&uts_sem);
- r=proc_dostring(table,1,filp,buffer,lenp, ppos);
- up_write(&uts_sem);
- }
- return r;
-}
-#else /* !CONFIG_UTS_NS */
-static int proc_do_uts_string(ctl_table *table, int write, struct file *filp,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- int r;
- struct uts_namespace* uts_ns = current->nsproxy->uts_ns;
- char* which;
-
- switch (table->ctl_name) {
- case KERN_OSTYPE:
- which = uts_ns->name.sysname;
- break;
- case KERN_NODENAME:
- which = uts_ns->name.nodename;
- break;
- case KERN_OSRELEASE:
- which = uts_ns->name.release;
- break;
- case KERN_VERSION:
- which = uts_ns->name.version;
- break;
- case KERN_DOMAINNAME:
- which = uts_ns->name.domainname;
- break;
- default:
- r = -EINVAL;
- goto out;
- }
-
- if (!write) {
- down_read(&uts_sem);
- r=_proc_do_string(which,table->maxlen,0,filp,buffer,lenp, ppos);
- up_read(&uts_sem);
- } else {
- down_write(&uts_sem);
- r=_proc_do_string(which,table->maxlen,1,filp,buffer,lenp, ppos);
- up_write(&uts_sem);
- }
- out:
- return r;
-}
-#endif /* !CONFIG_UTS_NS */
static int do_proc_dointvec_conv(int *negp, unsigned long *lvalp,
int *valp,
#define OP_SET 0
#define OP_AND 1
#define OP_OR 2
-#define OP_MAX 3
-#define OP_MIN 4
static int do_proc_dointvec_bset_conv(int *negp, unsigned long *lvalp,
int *valp,
case OP_SET: *valp = val; break;
case OP_AND: *valp &= val; break;
case OP_OR: *valp |= val; break;
- case OP_MAX: if(*valp < val)
- *valp = val;
- break;
- case OP_MIN: if(*valp > val)
- *valp = val;
- break;
}
} else {
int val = *valp;
{
int op;
- if (!capable(CAP_SYS_MODULE)) {
+ if (write && !capable(CAP_SYS_MODULE)) {
return -EPERM;
}
do_proc_dointvec_bset_conv,&op);
}
+/*
+ * Taint values can only be increased
+ */
+static int proc_dointvec_taint(ctl_table *table, int write, struct file *filp,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int op;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ op = OP_OR;
+ return do_proc_dointvec(table,write,filp,buffer,lenp,ppos,
+ do_proc_dointvec_bset_conv,&op);
+}
+
struct do_proc_dointvec_minmax_conv_param {
int *min;
int *max;
}
#ifdef CONFIG_SYSVIPC
-static int proc_do_ipc_string(ctl_table *table, int write, struct file *filp,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static int proc_ipc_dointvec(ctl_table *table, int write, struct file *filp,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
- void *data;
- struct ipc_namespace *ns;
-
- ns = current->nsproxy->ipc_ns;
-
- switch (table->ctl_name) {
- case KERN_SHMMAX:
- data = &ns->shm_ctlmax;
- goto proc_minmax;
- case KERN_SHMALL:
- data = &ns->shm_ctlall;
- goto proc_minmax;
- case KERN_SHMMNI:
- data = &ns->shm_ctlmni;
- break;
- case KERN_MSGMAX:
- data = &ns->msg_ctlmax;
- break;
- case KERN_MSGMNI:
- data = &ns->msg_ctlmni;
- break;
- case KERN_MSGMNB:
- data = &ns->msg_ctlmnb;
- break;
- case KERN_SEM:
- data = &ns->sem_ctls;
- break;
- default:
- return -EINVAL;
- }
-
- return __do_proc_dointvec(data, table, write, filp, buffer,
+ void *which;
+ which = get_ipc(table, write);
+ return __do_proc_dointvec(which, table, write, filp, buffer,
lenp, ppos, NULL, NULL);
-proc_minmax:
- return __do_proc_doulongvec_minmax(data, table, write, filp, buffer,
+}
+
+static int proc_ipc_doulongvec_minmax(ctl_table *table, int write,
+ struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ void *which;
+ which = get_ipc(table, write);
+ return __do_proc_doulongvec_minmax(which, table, write, filp, buffer,
lenp, ppos, 1l, 1l);
}
+
#endif
static int proc_do_cad_pid(ctl_table *table, int write, struct file *filp,
return -ENOSYS;
}
-static int proc_do_uts_string(ctl_table *table, int write, struct file *filp,
+#ifdef CONFIG_SYSVIPC
+static int proc_do_ipc_string(ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-
-#ifdef CONFIG_SYSVIPC
-static int proc_do_ipc_string(ctl_table *table, int write, struct file *filp,
+static int proc_ipc_dointvec(ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
+static int proc_ipc_doulongvec_minmax(ctl_table *table, int write,
+ struct file *filp, void __user *buffer,
+ size_t *lenp, loff_t *ppos)
+{
+ return -ENOSYS;
+}
#endif
int proc_dointvec(ctl_table *table, int write, struct file *filp,
/* The generic string strategy routine: */
int sysctl_string(ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen, void **context)
+ void __user *newval, size_t newlen)
{
if (!table->data || !table->maxlen)
return -ENOTDIR;
*/
int sysctl_intvec(ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen, void **context)
+ void __user *newval, size_t newlen)
{
if (newval && newlen) {
/* Strategy function to convert jiffies to seconds */
int sysctl_jiffies(ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen, void **context)
+ void __user *newval, size_t newlen)
{
- if (oldval) {
+ if (oldval && oldlenp) {
size_t olen;
- if (oldlenp) {
- if (get_user(olen, oldlenp))
+
+ if (get_user(olen, oldlenp))
+ return -EFAULT;
+ if (olen) {
+ int val;
+
+ if (olen < sizeof(int))
+ return -EINVAL;
+
+ val = *(int *)(table->data) / HZ;
+ if (put_user(val, (int __user *)oldval))
+ return -EFAULT;
+ if (put_user(sizeof(int), oldlenp))
return -EFAULT;
- if (olen!=sizeof(int))
- return -EINVAL;
}
- if (put_user(*(int *)(table->data)/HZ, (int __user *)oldval) ||
- (oldlenp && put_user(sizeof(int),oldlenp)))
- return -EFAULT;
}
if (newval && newlen) {
int new;
/* Strategy function to convert jiffies to seconds */
int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen, void **context)
+ void __user *newval, size_t newlen)
{
- if (oldval) {
+ if (oldval && oldlenp) {
size_t olen;
- if (oldlenp) {
- if (get_user(olen, oldlenp))
+
+ if (get_user(olen, oldlenp))
+ return -EFAULT;
+ if (olen) {
+ int val;
+
+ if (olen < sizeof(int))
+ return -EINVAL;
+
+ val = jiffies_to_msecs(*(int *)(table->data));
+ if (put_user(val, (int __user *)oldval))
+ return -EFAULT;
+ if (put_user(sizeof(int), oldlenp))
return -EFAULT;
- if (olen!=sizeof(int))
- return -EINVAL;
}
- if (put_user(jiffies_to_msecs(*(int *)(table->data)), (int __user *)oldval) ||
- (oldlenp && put_user(sizeof(int),oldlenp)))
- return -EFAULT;
}
if (newval && newlen) {
int new;
return 1;
}
+
+
+#ifdef CONFIG_SYSVIPC
+/* The generic sysctl ipc data routine. */
+static int sysctl_ipc_data(ctl_table *table, int __user *name, int nlen,
+ void __user *oldval, size_t __user *oldlenp,
+ void __user *newval, size_t newlen)
+{
+ size_t len;
+ void *data;
+
+ /* Get out of I don't have a variable */
+ if (!table->data || !table->maxlen)
+ return -ENOTDIR;
+
+ data = get_ipc(table, 1);
+ if (!data)
+ return -ENOTDIR;
+
+ if (oldval && oldlenp) {
+ if (get_user(len, oldlenp))
+ return -EFAULT;
+ if (len) {
+ if (len > table->maxlen)
+ len = table->maxlen;
+ if (copy_to_user(oldval, data, len))
+ return -EFAULT;
+ if (put_user(len, oldlenp))
+ return -EFAULT;
+ }
+ }
+
+ if (newval && newlen) {
+ if (newlen > table->maxlen)
+ newlen = table->maxlen;
+
+ if (copy_from_user(data, newval, newlen))
+ return -EFAULT;
+ }
+ return 1;
+}
+#endif
+
#else /* CONFIG_SYSCTL_SYSCALL */
int sysctl_string(ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen, void **context)
+ void __user *newval, size_t newlen)
{
return -ENOSYS;
}
int sysctl_intvec(ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen, void **context)
+ void __user *newval, size_t newlen)
{
return -ENOSYS;
}
int sysctl_jiffies(ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen, void **context)
+ void __user *newval, size_t newlen)
{
return -ENOSYS;
}
int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen, void **context)
+ void __user *newval, size_t newlen)
{
return -ENOSYS;
}
+#ifdef CONFIG_SYSVIPC
+static int sysctl_ipc_data(ctl_table *table, int __user *name, int nlen,
+ void __user *oldval, size_t __user *oldlenp,
+ void __user *newval, size_t newlen)
+{
+ return -ENOSYS;
+}
+#endif
#endif /* CONFIG_SYSCTL_SYSCALL */
/*
projects / powerpc.git / blobdiff