linux-imx
Public
Source
committed a5c5928b7597
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* modify it under the terms of the GNU General Public License as8
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* published by the Free Software Foundation, version 2 of the9
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* License.10
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*/11
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#include <linux/nsproxy.h>13
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#include <linux/ipc_namespace.h>14
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#include <linux/sysctl.h>15
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#ifdef CONFIG_PROC_SYSCTL17
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static void *get_mq(ctl_table *table)17
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static void *get_mq(struct ctl_table *table)18
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{19
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char *which = table->data;20
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struct ipc_namespace *ipc_ns = current->nsproxy->ipc_ns;21
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which = (which - (char *)&init_ipc_ns) + (char *)ipc_ns;22
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return which;23
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}24
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static int proc_mq_dointvec(ctl_table *table, int write,25
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static int proc_mq_dointvec(struct ctl_table *table, int write,26
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void __user *buffer, size_t *lenp, loff_t *ppos)27
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{28
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struct ctl_table mq_table;29
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memcpy(&mq_table, table, sizeof(mq_table));30
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mq_table.data = get_mq(table);31
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return proc_dointvec(&mq_table, write, buffer, lenp, ppos);33
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}34
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static int proc_mq_dointvec_minmax(ctl_table *table, int write,35
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static int proc_mq_dointvec_minmax(struct ctl_table *table, int write,36
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void __user *buffer, size_t *lenp, loff_t *ppos)37
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{38
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struct ctl_table mq_table;39
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memcpy(&mq_table, table, sizeof(mq_table));40
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mq_table.data = get_mq(table);41
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return proc_dointvec_minmax(&mq_table, write, buffer,43
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lenp, ppos);44
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}45
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#else46
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#define proc_mq_dointvec NULL47
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#define proc_mq_dointvec_minmax NULL48
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#endif49
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static int msg_max_limit_min = MIN_MSGMAX;51
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static int msg_max_limit_max = HARD_MSGMAX;52
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static int msg_maxsize_limit_min = MIN_MSGSIZEMAX;54
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static int msg_maxsize_limit_max = HARD_MSGSIZEMAX;55
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static ctl_table mq_sysctls[] = {56
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static struct ctl_table mq_sysctls[] = {57
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{58
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.procname = "queues_max",59
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.data = &init_ipc_ns.mq_queues_max,60
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.maxlen = sizeof(int),61
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.mode = 0644,62
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.proc_handler = proc_mq_dointvec,63
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},64
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{65
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.procname = "msg_max",66
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.data = &init_ipc_ns.mq_msg_max,93
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.data = &init_ipc_ns.mq_msgsize_default,94
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.maxlen = sizeof(int),95
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.mode = 0644,96
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.proc_handler = proc_mq_dointvec_minmax,97
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.extra1 = &msg_maxsize_limit_min,98
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.extra2 = &msg_maxsize_limit_max,99
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},100
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{}101
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};102
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static ctl_table mq_sysctl_dir[] = {103
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static struct ctl_table mq_sysctl_dir[] = {104
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{105
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.procname = "mqueue",106
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.mode = 0555,107
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.child = mq_sysctls,108
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},109
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{}110
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};111
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static ctl_table mq_sysctl_root[] = {112
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static struct ctl_table mq_sysctl_root[] = {113
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{114
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.procname = "fs",115
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.mode = 0555,116
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.child = mq_sysctl_dir,117
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},118
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{}119
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};120
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struct ctl_table_header *mq_register_sysctl_table(void)122
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{