X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=kernel%2Fsysctl.c;h=608fbac3eb55b010126475bb17fd9f60d58a0b4a;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=e95f475d0bd9d3adb349f89dc6e6d102a59519cb;hpb=9213980e6a70d8473e0ffd4b39ab5b6caaba9ff5;p=linux-2.6.git diff --git a/kernel/sysctl.c b/kernel/sysctl.c index e95f475d0..608fbac3e 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -39,6 +39,8 @@ #include #include #include +#include + #include #ifdef CONFIG_ROOT_NFS @@ -53,8 +55,6 @@ extern int C_A_D; extern int sysctl_overcommit_memory; extern int sysctl_overcommit_ratio; extern int max_threads; -extern atomic_t nr_queued_signals; -extern int max_queued_signals; extern int sysrq_enabled; extern int core_uses_pid; extern char core_pattern[]; @@ -114,7 +114,7 @@ extern int sysctl_hz_timer; #if defined(CONFIG_PPC32) && defined(CONFIG_6xx) extern unsigned long powersave_nap; int proc_dol2crvec(ctl_table *table, int write, struct file *filp, - void *buffer, size_t *lenp); + void __user *buffer, size_t *lenp, loff_t *ppos); #endif #ifdef CONFIG_BSD_PROCESS_ACCT @@ -124,7 +124,7 @@ extern int acct_parm[]; static int parse_table(int __user *, int, void __user *, size_t __user *, void __user *, size_t, ctl_table *, void **); static int proc_doutsstring(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp); + void __user *buffer, size_t *lenp, loff_t *ppos); static ctl_table root_table[]; static struct ctl_table_header root_table_header = @@ -439,22 +439,6 @@ static ctl_table kern_table[] = { .proc_handler = &proc_dointvec, }, #endif - { - .ctl_name = KERN_RTSIGNR, - .procname = "rtsig-nr", - .data = &nr_queued_signals, - .maxlen = sizeof(int), - .mode = 0444, - .proc_handler = &proc_dointvec, - }, - { - .ctl_name = KERN_RTSIGMAX, - .procname = "rtsig-max", - .data = &max_queued_signals, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec, - }, #ifdef CONFIG_SYSVIPC { .ctl_name = KERN_SHMMAX, @@ -805,6 +789,16 @@ static ctl_table vm_table[] = { .strategy = &sysctl_intvec, .extra1 = &zero, }, + { + .ctl_name = VM_VFS_CACHE_PRESSURE, + .procname = "vfs_cache_pressure", + .data = &sysctl_vfs_cache_pressure, + .maxlen = sizeof(sysctl_vfs_cache_pressure), + .mode = 0644, + .proc_handler = &proc_dointvec, + .strategy = &sysctl_intvec, + .extra1 = &zero, + }, { .ctl_name = 0 } }; @@ -1303,11 +1297,7 @@ static ssize_t do_rw_proc(int write, struct file * file, char __user * buf, res = count; - /* - * FIXME: we need to pass on ppos to the handler. - */ - - error = (*table->proc_handler) (table, write, file, buf, &res); + error = (*table->proc_handler) (table, write, file, buf, &res, ppos); if (error) return error; return res; @@ -1357,14 +1347,14 @@ static ssize_t proc_writesys(struct file * file, const char __user * buf, * Returns 0 on success. */ int proc_dostring(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { size_t len; char __user *p; char c; if (!table->data || !table->maxlen || !*lenp || - (filp->f_pos && !write)) { + (*ppos && !write)) { *lenp = 0; return 0; } @@ -1384,7 +1374,7 @@ int proc_dostring(ctl_table *table, int write, struct file *filp, if(copy_from_user(table->data, buffer, len)) return -EFAULT; ((char *) table->data)[len] = 0; - filp->f_pos += *lenp; + *ppos += *lenp; } else { len = strlen(table->data); if (len > table->maxlen) @@ -1400,7 +1390,7 @@ int proc_dostring(ctl_table *table, int write, struct file *filp, len++; } *lenp = len; - filp->f_pos += len; + *ppos += len; } return 0; } @@ -1411,17 +1401,17 @@ int proc_dostring(ctl_table *table, int write, struct file *filp, */ static int proc_doutsstring(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + 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); + 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); + r=proc_dostring(table,1,filp,buffer,lenp, ppos); up_write(&uts_sem); } return r; @@ -1447,12 +1437,12 @@ static int do_proc_dointvec_conv(int *negp, unsigned long *lvalp, } static int do_proc_dointvec(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp, + void __user *buffer, size_t *lenp, loff_t *ppos, int (*conv)(int *negp, unsigned long *lvalp, int *valp, int write, void *data), void *data) { -#define TMPBUFLEN 20 +#define TMPBUFLEN 21 int *i, vleft, first=1, neg, val; unsigned long lval; size_t left, len; @@ -1461,7 +1451,7 @@ static int do_proc_dointvec(ctl_table *table, int write, struct file *filp, char __user *s = buffer; if (!table->data || !table->maxlen || !*lenp || - (filp->f_pos && !write)) { + (*ppos && !write)) { *lenp = 0; return 0; } @@ -1550,7 +1540,7 @@ static int do_proc_dointvec(ctl_table *table, int write, struct file *filp, if (write && first) return -EINVAL; *lenp -= left; - filp->f_pos += *lenp; + *ppos += *lenp; return 0; #undef TMPBUFLEN } @@ -1569,9 +1559,9 @@ static int do_proc_dointvec(ctl_table *table, int write, struct file *filp, * Returns 0 on success. */ int proc_dointvec(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { - return do_proc_dointvec(table,write,filp,buffer,lenp, + return do_proc_dointvec(table,write,filp,buffer,lenp,ppos, NULL,NULL); } @@ -1617,7 +1607,7 @@ static int do_proc_dointvec_bset_conv(int *negp, unsigned long *lvalp, */ int proc_dointvec_bset(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { int op; @@ -1626,7 +1616,7 @@ int proc_dointvec_bset(ctl_table *table, int write, struct file *filp, } op = (current->pid == 1) ? OP_SET : OP_AND; - return do_proc_dointvec(table,write,filp,buffer,lenp, + return do_proc_dointvec(table,write,filp,buffer,lenp,ppos, do_proc_dointvec_bset_conv,&op); } @@ -1676,23 +1666,24 @@ static int do_proc_dointvec_minmax_conv(int *negp, unsigned long *lvalp, * Returns 0 on success. */ int proc_dointvec_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { struct do_proc_dointvec_minmax_conv_param param = { .min = (int *) table->extra1, .max = (int *) table->extra2, }; - return do_proc_dointvec(table, write, filp, buffer, lenp, + return do_proc_dointvec(table, write, filp, buffer, lenp, ppos, do_proc_dointvec_minmax_conv, ¶m); } static int do_proc_doulongvec_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp, + void __user *buffer, + size_t *lenp, loff_t *ppos, unsigned long convmul, unsigned long convdiv) { -#define TMPBUFLEN 20 +#define TMPBUFLEN 21 unsigned long *i, *min, *max, val; int vleft, first=1, neg; size_t len, left; @@ -1700,7 +1691,7 @@ static int do_proc_doulongvec_minmax(ctl_table *table, int write, char __user *s = buffer; if (!table->data || !table->maxlen || !*lenp || - (filp->f_pos && !write)) { + (*ppos && !write)) { *lenp = 0; return 0; } @@ -1785,7 +1776,7 @@ static int do_proc_doulongvec_minmax(ctl_table *table, int write, if (write && first) return -EINVAL; *lenp -= left; - filp->f_pos += *lenp; + *ppos += *lenp; return 0; #undef TMPBUFLEN } @@ -1807,9 +1798,9 @@ static int do_proc_doulongvec_minmax(ctl_table *table, int write, * Returns 0 on success. */ int proc_doulongvec_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { - return do_proc_doulongvec_minmax(table, write, filp, buffer, lenp, 1l, 1l); + return do_proc_doulongvec_minmax(table, write, filp, buffer, lenp, ppos, 1l, 1l); } /** @@ -1831,10 +1822,11 @@ int proc_doulongvec_minmax(ctl_table *table, int write, struct file *filp, */ int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, + size_t *lenp, loff_t *ppos) { return do_proc_doulongvec_minmax(table, write, filp, buffer, - lenp, HZ, 1000l); + lenp, ppos, HZ, 1000l); } @@ -1896,9 +1888,9 @@ static int do_proc_dointvec_userhz_jiffies_conv(int *negp, unsigned long *lvalp, * Returns 0 on success. */ int proc_dointvec_jiffies(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { - return do_proc_dointvec(table,write,filp,buffer,lenp, + return do_proc_dointvec(table,write,filp,buffer,lenp,ppos, do_proc_dointvec_jiffies_conv,NULL); } @@ -1918,65 +1910,66 @@ int proc_dointvec_jiffies(ctl_table *table, int write, struct file *filp, * Returns 0 on success. */ int proc_dointvec_userhz_jiffies(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { - return do_proc_dointvec(table,write,filp,buffer,lenp, + return do_proc_dointvec(table,write,filp,buffer,lenp,ppos, do_proc_dointvec_userhz_jiffies_conv,NULL); } #else /* CONFIG_PROC_FS */ int proc_dostring(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } static int proc_doutsstring(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_bset(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_jiffies(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_userhz_jiffies(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_doulongvec_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, + size_t *lenp, loff_t *ppos) { return -ENOSYS; } @@ -2127,50 +2120,51 @@ int sysctl_jiffies(ctl_table *table, int __user *name, int nlen, } int proc_dostring(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_bset(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_jiffies(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_userhz_jiffies(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_doulongvec_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int write, struct file *filp, - void __user *buffer, size_t *lenp) + void __user *buffer, + size_t *lenp, loff_t *ppos) { return -ENOSYS; } @@ -2178,7 +2172,7 @@ int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int write, struct ctl_table_header * register_sysctl_table(ctl_table * table, int insert_at_head) { - return 0; + return NULL; } void unregister_sysctl_table(struct ctl_table_header * table)