sysctl.c (0195c00244dc2e9f522475868fa278c473ba7339) sysctl.c (5a04cca6c39cdd0b8c75b0628da634248f381b62)
1/*
2 * sysctl.c: General linux system control interface
3 *
4 * Begun 24 March 1995, Stephen Tweedie
5 * Added /proc support, Dec 1995
6 * Added bdflush entry and intvec min/max checking, 2/23/96, Tom Dyas.
7 * Added hooks for /proc/sys/net (minor, minor patch), 96/4/1, Mike Shaver.
8 * Added kernel/java-{interpreter,appletviewer}, 96/5/10, Mike Shaver.

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18 * Removed it and replaced it with older style, 03/23/00, Bill Wendling
19 */
20
21#include <linux/module.h>
22#include <linux/mm.h>
23#include <linux/swap.h>
24#include <linux/slab.h>
25#include <linux/sysctl.h>
1/*
2 * sysctl.c: General linux system control interface
3 *
4 * Begun 24 March 1995, Stephen Tweedie
5 * Added /proc support, Dec 1995
6 * Added bdflush entry and intvec min/max checking, 2/23/96, Tom Dyas.
7 * Added hooks for /proc/sys/net (minor, minor patch), 96/4/1, Mike Shaver.
8 * Added kernel/java-{interpreter,appletviewer}, 96/5/10, Mike Shaver.

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18 * Removed it and replaced it with older style, 03/23/00, Bill Wendling
19 */
20
21#include <linux/module.h>
22#include <linux/mm.h>
23#include <linux/swap.h>
24#include <linux/slab.h>
25#include <linux/sysctl.h>
26#include <linux/bitmap.h>
26#include <linux/signal.h>
27#include <linux/printk.h>
28#include <linux/proc_fs.h>
29#include <linux/security.h>
30#include <linux/ctype.h>
31#include <linux/kmemcheck.h>
32#include <linux/fs.h>
33#include <linux/init.h>

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63#include <asm/uaccess.h>
64#include <asm/processor.h>
65
66#ifdef CONFIG_X86
67#include <asm/nmi.h>
68#include <asm/stacktrace.h>
69#include <asm/io.h>
70#endif
27#include <linux/signal.h>
28#include <linux/printk.h>
29#include <linux/proc_fs.h>
30#include <linux/security.h>
31#include <linux/ctype.h>
32#include <linux/kmemcheck.h>
33#include <linux/fs.h>
34#include <linux/init.h>

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64#include <asm/uaccess.h>
65#include <asm/processor.h>
66
67#ifdef CONFIG_X86
68#include <asm/nmi.h>
69#include <asm/stacktrace.h>
70#include <asm/io.h>
71#endif
71#ifdef CONFIG_SPARC
72#include <asm/setup.h>
73#endif
74#ifdef CONFIG_BSD_PROCESS_ACCT
75#include <linux/acct.h>
76#endif
77#ifdef CONFIG_RT_MUTEXES
78#include <linux/rtmutex.h>
79#endif
80#if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT)
81#include <linux/lockdep.h>

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140
141static int ngroups_max = NGROUPS_MAX;
142static const int cap_last_cap = CAP_LAST_CAP;
143
144#ifdef CONFIG_INOTIFY_USER
145#include <linux/inotify.h>
146#endif
147#ifdef CONFIG_SPARC
72#ifdef CONFIG_BSD_PROCESS_ACCT
73#include <linux/acct.h>
74#endif
75#ifdef CONFIG_RT_MUTEXES
76#include <linux/rtmutex.h>
77#endif
78#if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT)
79#include <linux/lockdep.h>

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138
139static int ngroups_max = NGROUPS_MAX;
140static const int cap_last_cap = CAP_LAST_CAP;
141
142#ifdef CONFIG_INOTIFY_USER
143#include <linux/inotify.h>
144#endif
145#ifdef CONFIG_SPARC
146#include <asm/system.h>
148#endif
149
150#ifdef CONFIG_SPARC64
151extern int sysctl_tsb_ratio;
152#endif
153
154#ifdef __hppa__
155extern int pwrsw_enabled;

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2390 break;
2391 }
2392 if (left) {
2393 kbuf++;
2394 left--;
2395 }
2396 }
2397
147#endif
148
149#ifdef CONFIG_SPARC64
150extern int sysctl_tsb_ratio;
151#endif
152
153#ifdef __hppa__
154extern int pwrsw_enabled;

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2389 break;
2390 }
2391 if (left) {
2392 kbuf++;
2393 left--;
2394 }
2395 }
2396
2398 while (val_a <= val_b)
2399 set_bit(val_a++, tmp_bitmap);
2400
2397 bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1);
2401 first = 0;
2402 proc_skip_char(&kbuf, &left, '\n');
2403 }
2404 free_page(page);
2405 } else {
2406 unsigned long bit_a, bit_b = 0;
2407
2408 while (left) {

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2435 err = proc_put_char(&buffer, &left, '\n');
2436 }
2437
2438 if (!err) {
2439 if (write) {
2440 if (*ppos)
2441 bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len);
2442 else
2398 first = 0;
2399 proc_skip_char(&kbuf, &left, '\n');
2400 }
2401 free_page(page);
2402 } else {
2403 unsigned long bit_a, bit_b = 0;
2404
2405 while (left) {

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2432 err = proc_put_char(&buffer, &left, '\n');
2433 }
2434
2435 if (!err) {
2436 if (write) {
2437 if (*ppos)
2438 bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len);
2439 else
2443 memcpy(bitmap, tmp_bitmap,
2444 BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long));
2440 bitmap_copy(bitmap, tmp_bitmap, bitmap_len);
2445 }
2446 kfree(tmp_bitmap);
2447 *lenp -= left;
2448 *ppos += *lenp;
2449 return 0;
2450 } else {
2451 kfree(tmp_bitmap);
2452 return err;

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2442 kfree(tmp_bitmap);
2443 *lenp -= left;
2444 *ppos += *lenp;
2445 return 0;
2446 } else {
2447 kfree(tmp_bitmap);
2448 return err;

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