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Re: [PATCH 14/59] sysctl: C99 convert xfs ctl_tables [message #17260 is a reply to message #17163] |
Wed, 17 January 2007 17:01 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) ![Go to next message Go to next message](/theme/ovz3/images/down.png) |
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Messages: 1693 Registered: September 2005 Location: Moscow
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minor extra space in table below...
Kirill
> From: Eric W. Biederman <ebiederm@xmission.com> - unquoted
>
> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> ---
> fs/xfs/linux-2.6/xfs_sysctl.c | 258 ++++++++++++++++++++++++++++------------
> 1 files changed, 180 insertions(+), 78 deletions(-)
>
> diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/linux-2.6/xfs_sysctl.c
> index af777e9..5a0eefc 100644
> --- a/fs/xfs/linux-2.6/xfs_sysctl.c
> +++ b/fs/xfs/linux-2.6/xfs_sysctl.c
> @@ -55,95 +55,197 @@ xfs_stats_clear_proc_handler(
> #endif /* CONFIG_PROC_FS */
>
> STATIC ctl_table xfs_table[] = {
> - {XFS_RESTRICT_CHOWN, "restrict_chown", &xfs_params.restrict_chown.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.restrict_chown.min, &xfs_params.restrict_chown.max},
> -
> - {XFS_SGID_INHERIT, "irix_sgid_inherit", &xfs_params.sgid_inherit.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.sgid_inherit.min, &xfs_params.sgid_inherit.max},
> -
> - {XFS_SYMLINK_MODE, "irix_symlink_mode", &xfs_params.symlink_mode.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.symlink_mode.min, &xfs_params.symlink_mode.max},
> -
> - {XFS_PANIC_MASK, "panic_mask", &xfs_params.panic_mask.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.panic_mask.min, &xfs_params.panic_mask.max},
> -
> - {XFS_ERRLEVEL, "error_level", &xfs_params.error_level.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.error_level.min, &xfs_params.error_level.max},
> -
> - {XFS_SYNCD_TIMER, "xfssyncd_centisecs", &xfs_params.syncd_timer.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.syncd_timer.min, &xfs_params.syncd_timer.max},
> -
> - {XFS_INHERIT_SYNC, "inherit_sync", &xfs_params.inherit_sync.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.inherit_sync.min, &xfs_params.inherit_sync.max},
> -
> - {XFS_INHERIT_NODUMP, "inherit_nodump", &xfs_params.inherit_nodump.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.inherit_nodump.min, &xfs_params.inherit_nodump.max},
> -
> - {XFS_INHERIT_NOATIME, "inherit_noatime", &xfs_params.inherit_noatim.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.inherit_noatim.min, &xfs_params.inherit_noatim.max},
> -
> - {XFS_BUF_TIMER, "xfsbufd_centisecs", &xfs_params.xfs_buf_timer.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.xfs_buf_timer.min, &xfs_params.xfs_buf_timer.max},
> -
> - {XFS_BUF_AGE, "age_buffer_centisecs", &xfs_params.xfs_buf_age.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.xfs_buf_age.min, &xfs_params.xfs_buf_age.max},
> -
> - {XFS_INHERIT_NOSYM, "inherit_nosymlinks", &xfs_params.inherit_nosym.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.inherit_nosym.min, &xfs_params.inherit_nosym.max},
> -
> - {XFS_ROTORSTEP, "rotorstep", &xfs_params.rotorstep.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.rotorstep.min, &xfs_params.rotorstep.max},
> -
> - {XFS_INHERIT_NODFRG, "inherit_nodefrag", &xfs_params.inherit_nodfrg.val,
> - sizeof(int), 0644, NULL, &proc_dointvec_minmax,
> - &sysctl_intvec, NULL,
> - &xfs_params.inherit_nodfrg.min, &xfs_params.inherit_nodfrg.max},
> + {
> + .ctl_name = XFS_RESTRICT_CHOWN,
> + .procname = "restrict_chown",
> + .data = &xfs_params.restrict_chown.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.restrict_chown.min,
> + .extra2 = &xfs_params.restrict_chown.max
> + },
> + {
> + .ctl_name = XFS_SGID_INHERIT,
> + .procname = "irix_sgid_inherit",
> + .data = &xfs_params.sgid_inherit.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.sgid_inherit.min,
> + .extra2 = &xfs_params.sgid_inherit.max
> + },
> + {
> + .ctl_name = XFS_SYMLINK_MODE,
> + .procname = "irix_symlink_mode",
> + .data = &xfs_params.symlink_mode.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.symlink_mode.min,
> + .extra2 = &xfs_params.symlink_mode.max
> + },
> + {
> + .ctl_name = XFS_PANIC_MASK,
> + .procname = "panic_mask",
> + .data = &xfs_params.panic_mask.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.panic_mask.min,
> + .extra2 = &xfs_params.panic_mask.max
> + },
>
> + {
> + .ctl_name = XFS_ERRLEVEL,
> + .procname = "error_level",
> + .data = &xfs_params.error_level.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.error_level.min,
> + .extra2 = &xfs_params.error_level.max
> + },
> + {
> + .ctl_name = XFS_SYNCD_TIMER,
> + .procname = "xfssyncd_centisecs",
> + .data = &xfs_params.syncd_timer.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.syncd_timer.min,
> + .extra2 = &xfs_params.syncd_timer.max
> + },
> + {
> + .ctl_name = XFS_INHERIT_SYNC,
> + .procname = "inherit_sync",
> + .data = &xfs_params.inherit_sync.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.inherit_sync.min,
> + .extra2 = &xfs_params.inherit_sync.max
> + },
> + {
> + .ctl_name = XFS_INHERIT_NODUMP,
> + .procname = "inherit_nodump",
> + .data = &xfs_params.inherit_nodump.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec, NULL,
> + .extra1 = &xfs_params.inherit_nodump.min,
> + .extra2 = &xfs_params.inherit_nodump.max
> + },
> + {
> + .ctl_name = XFS_INHERIT_NOATIME,
> + .procname = "inherit_noatime",
> + .data = &xfs_params.inherit_noatim.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec, NULL,
> + .extra1 = &xfs_params.inherit_noatim.min,
> + .extra2 = &xfs_params.inherit_noatim.max
> + },
> + {
> + .ctl_name = XFS_BUF_TIMER,
> + .procname = "xfsbufd_centisecs",
> + .data = &xfs_params.xfs_buf_timer.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.xfs_buf_timer.min,
> + .extra2 = &xfs_params.xfs_buf_timer.max
> + },
> + {
> + .ctl_name = XFS_BUF_AGE,
> + .procname = "age_buffer_centisecs",
> + .data = &xfs_params.xfs_buf_age.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec, NULL,
> + .extra1 = &xfs_params.xfs_buf_age.min,
> + .extra2 = &xfs_params.xfs_buf_age.max
> + },
> + {
> + .ctl_name = XFS_INHERIT_NOSYM,
> + .procname = "inherit_nosymlinks",
> + .data = &xfs_params.inherit_nosym.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.inherit_nosym.min,
> + .extra2 = &xfs_params.inherit_nosym.max
> + },
> + {
> + .ctl_name = XFS_ROTORSTEP,
> + .procname = "rotorstep",
> + .data = &xfs_params.rotorstep.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &xfs_params.rotorstep.min,
> + .extra2 = &xfs_params.rotorstep.max
> + },
> + {
> + .ctl_name = XFS_INHERIT_NODFRG,
> + .procname = "inherit_nodefrag",
> + .data = &xfs_params.inherit_nodfrg.val,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &proc_dointvec_minmax,
> + .strategy = &sysctl_intvec,
> + .extra1 = &a
...
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Re: [PATCH 25/59] sysctl: C99 convert arch/frv/kernel/pm.c [message #17261 is a reply to message #17174] |
Wed, 17 January 2007 17:14 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) ![Go to next message Go to next message](/theme/ovz3/images/down.png) |
dev
Messages: 1693 Registered: September 2005 Location: Moscow
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another small minor note.
> From: Eric W. Biederman <ebiederm@xmission.com> - unquoted
>
> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> ---
> arch/frv/kernel/pm.c | 50 +++++++++++++++++++++++++++++++++++++++++++-------
> 1 files changed, 43 insertions(+), 7 deletions(-)
>
> diff --git a/arch/frv/kernel/pm.c b/arch/frv/kernel/pm.c
> index c1840d6..aa50333 100644
> --- a/arch/frv/kernel/pm.c
> +++ b/arch/frv/kernel/pm.c
> @@ -401,17 +401,53 @@ static int cm_sysctl(ctl_table *table, int __user *name, int nlen,
>
> static struct ctl_table pm_table[] =
> {
> - {CTL_PM_SUSPEND, "suspend", NULL, 0, 0200, NULL, &sysctl_pm_do_suspend},
> - {CTL_PM_CMODE, "cmode", &clock_cmode_current, sizeof(int), 0644, NULL, &cmode_procctl, &cmode_sysctl, NULL},
> - {CTL_PM_P0, "p0", &clock_p0_current, sizeof(int), 0644, NULL, &p0_procctl, &p0_sysctl, NULL},
> - {CTL_PM_CM, "cm", &clock_cm_current, sizeof(int), 0644, NULL, &cm_procctl, &cm_sysctl, NULL},
> - {0}
> + {
> + .ctl_name = CTL_PM_SUSPEND,
> + .procname = "suspend",
> + .data = NULL,
> + .maxlen = 0,
> + .mode = 0200,
> + .proc_handler = &sysctl_pm_do_suspend,
> + },
> + {
> + .ctl_name = CTL_PM_CMODE,
> + .procname = "cmode",
> + .data = &clock_cmode_current,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &cmode_procctl,
> + .strategy = &cmode_sysctl,
> + },
> + {
> + .ctl_name = CTL_PM_P0,
> + .procname = "p0",
> + .data = &clock_p0_current,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &p0_procctl,
> + .strategy = &p0_sysctl,
> + },
> + {
> + .ctl_name = CTL_PM_CM,
> + .procname = "cm",
> + .data = &clock_cm_current,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = &cm_procctl,
> + .strategy = &cm_sysctl,
> + },
> + { .ctl_name = 0}
in next patch (26/59) you write just "{ }". .ctl_name = 0 not required here.
> };
>
> static struct ctl_table pm_dir_table[] =
> {
> - {CTL_PM, "pm", NULL, 0, 0555, pm_table},
> - {0}
> + {
> + .ctl_name = CTL_PM,
> + .procname = "pm",
> + .mode = 0555,
> + .child = pm_table,
> + },
> + { .ctl_name = 0}
> };
>
> /*
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Re: [PATCH 33/59] sysctl: s390 move sysctl definitions to sysctl.h [message #17263 is a reply to message #17182] |
Wed, 17 January 2007 17:23 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) ![Go to next message Go to next message](/theme/ovz3/images/down.png) |
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Messages: 1693 Registered: September 2005 Location: Moscow
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IDs not sorted in enum. see below.
> From: Eric W. Biederman <ebiederm@xmission.com> - unquoted
>
> We need to have the the definition of all top level sysctl
> directories registers in sysctl.h so we don't conflict by
> accident and cause abi problems.
>
> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> ---
> arch/s390/appldata/appldata.h | 3 +--
> arch/s390/kernel/debug.c | 1 -
> arch/s390/mm/cmm.c | 4 ----
> include/linux/sysctl.h | 7 +++++++
> 4 files changed, 8 insertions(+), 7 deletions(-)
>
> diff --git a/arch/s390/appldata/appldata.h b/arch/s390/appldata/appldata.h
> index 0429481..4069b81 100644
> --- a/arch/s390/appldata/appldata.h
> +++ b/arch/s390/appldata/appldata.h
> @@ -21,8 +21,7 @@
> #define APPLDATA_RECORD_NET_SUM_ID 0x03 /* must be < 256 ! */
> #define APPLDATA_RECORD_PROC_ID 0x04
>
> -#define CTL_APPLDATA 2120 /* sysctl IDs, must be unique */
> -#define CTL_APPLDATA_TIMER 2121
> +#define CTL_APPLDATA_TIMER 2121 /* sysctl IDs, must be unique */
> #define CTL_APPLDATA_INTERVAL 2122
> #define CTL_APPLDATA_MEM 2123
> #define CTL_APPLDATA_OS 2124
> diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
> index bb57bc0..c81f8e5 100644
> --- a/arch/s390/kernel/debug.c
> +++ b/arch/s390/kernel/debug.c
> @@ -852,7 +852,6 @@ debug_finish_entry(debug_info_t * id, debug_entry_t* active, int level,
> static int debug_stoppable=1;
> static int debug_active=1;
>
> -#define CTL_S390DBF 5677
> #define CTL_S390DBF_STOPPABLE 5678
> #define CTL_S390DBF_ACTIVE 5679
>
> diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
> index 607f50e..df733d5 100644
> --- a/arch/s390/mm/cmm.c
> +++ b/arch/s390/mm/cmm.c
> @@ -256,10 +256,6 @@ cmm_skip_blanks(char *cp, char **endp)
> }
>
> #ifdef CONFIG_CMM_PROC
> -/* These will someday get removed. */
> -#define VM_CMM_PAGES 1111
> -#define VM_CMM_TIMED_PAGES 1112
> -#define VM_CMM_TIMEOUT 1113
>
> static struct ctl_table cmm_table[];
>
> diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
> index 71c16b4..56d0161 100644
> --- a/include/linux/sysctl.h
> +++ b/include/linux/sysctl.h
> @@ -73,6 +73,8 @@ enum
> CTL_SUNRPC=7249, /* sunrpc debug */
> CTL_PM=9899, /* frv power management */
> CTL_FRV=9898, /* frv specific sysctls */
> + CTL_S390DBF=5677, /* s390 debug */
> + CTL_APPLDATA=2120, /* s390 appldata */
<<<< not sorted by ID? imho should be sorted. otherwise can'be unnotied when inserted above.
> };
>
> /* CTL_BUS names: */
> @@ -205,6 +207,11 @@ enum
> VM_PANIC_ON_OOM=33, /* panic at out-of-memory */
> VM_VDSO_ENABLED=34, /* map VDSO into new processes? */
> VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */
> +
> + /* s390 vm cmm sysctls */
> + VM_CMM_PAGES=1111,
> + VM_CMM_TIMED_PAGES=1112,
> + VM_CMM_TIMEOUT=1113,
> };
>
>
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Re: [PATCH 50/59] sysctl: Move utsname sysctls to their own file [message #17264 is a reply to message #17199] |
Wed, 17 January 2007 17:41 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) ![Go to next message Go to next message](/theme/ovz3/images/down.png) |
dev
Messages: 1693 Registered: September 2005 Location: Moscow
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Eric, though I personally don't care much:
1. I ask for not setting your authorship/copyright on the code which you just copied
from other places. Just doesn't look polite IMHO.
2. I would propose to not introduce utsname_sysctl.c.
both files are too small and minor that I can't see much reasons splitting them.
Kirill
> From: Eric W. Biederman <ebiederm@xmission.com> - unquoted
>
> This is just a simple cleanup to keep kernel/sysctl.c
> from getting to crowded with special cases, and by
> keeping all of the utsname logic to together it makes
> the code a little more readable.
>
> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> ---
> kernel/Makefile | 1 +
> kernel/sysctl.c | 115 -------------------------------------
> kernel/utsname_sysctl.c | 146 +++++++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 147 insertions(+), 115 deletions(-)
>
> diff --git a/kernel/Makefile b/kernel/Makefile
> index 14f4d45..d286c44 100644
> --- a/kernel/Makefile
> +++ b/kernel/Makefile
> @@ -48,6 +48,7 @@ obj-$(CONFIG_SECCOMP) += seccomp.o
> obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
> obj-$(CONFIG_RELAY) += relay.o
> obj-$(CONFIG_UTS_NS) += utsname.o
> +obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
> obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
> obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
>
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index 7420761..a8c0a03 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> @@ -135,13 +135,6 @@ static int parse_table(int __user *, int, void __user *, size_t __user *,
> 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);
> -
> -static int sysctl_uts_string(ctl_table *table, int __user *name, int nlen,
> - void __user *oldval, size_t __user *oldlenp,
> - void __user *newval, size_t newlen);
> -
> #ifdef CONFIG_SYSVIPC
> static int sysctl_ipc_data(ctl_table *table, int __user *name, int nlen,
> void __user *oldval, size_t __user *oldlenp,
> @@ -174,27 +167,6 @@ extern ctl_table inotify_table[];
> int sysctl_legacy_va_layout;
> #endif
>
> -static void *get_uts(ctl_table *table, int write)
> -{
> - char *which = table->data;
> -#ifdef CONFIG_UTS_NS
> - struct uts_namespace *uts_ns = current->nsproxy->uts_ns;
> - which = (which - (char *)&init_uts_ns) + (char *)uts_ns;
> -#endif
> - if (!write)
> - down_read(&uts_sem);
> - else
> - down_write(&uts_sem);
> - return which;
> -}
> -
> -static void put_uts(ctl_table *table, int write, void *which)
> -{
> - if (!write)
> - up_read(&uts_sem);
> - else
> - up_write(&uts_sem);
> -}
>
> #ifdef CONFIG_SYSVIPC
> static void *get_ipc(ctl_table *table, int write)
> @@ -275,51 +247,6 @@ static ctl_table root_table[] = {
>
> static ctl_table kern_table[] = {
> {
> - .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_uts_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_uts_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_uts_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_uts_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_uts_string,
> - },
> - {
> .ctl_name = KERN_PANIC,
> .procname = "panic",
> .data = &panic_timeout,
> @@ -1746,21 +1673,6 @@ int proc_dostring(ctl_table *table, int write, struct file *filp,
> buffer, lenp, ppos);
> }
>
> -/*
> - * Special case of dostring for the UTS structure. This has locks
> - * to observe. Should this be in kernel/sys.c ????
> - */
> -
> -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;
> - void *which;
> - which = get_uts(table, write);
> - r = _proc_do_string(which, table->maxlen,write,filp,buffer,lenp, ppos);
> - put_uts(table, write, which);
> - return r;
> -}
>
> static int do_proc_dointvec_conv(int *negp, unsigned long *lvalp,
> int *valp,
> @@ -2379,12 +2291,6 @@ int proc_dostring(ctl_table *table, int write, struct file *filp,
> return -ENOSYS;
> }
>
> -static int proc_do_uts_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,
> void __user *buffer, size_t *lenp, loff_t *ppos)
> @@ -2602,21 +2508,6 @@ int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
> }
>
>
> -/* The generic string strategy routine: */
> -static int sysctl_uts_string(ctl_table *table, int __user *name, int nlen,
> - void __user *oldval, size_t __user *oldlenp,
> - void __user *newval, size_t newlen)
> -{
> - struct ctl_table uts_table;
> - int r, write;
> - write = newval && newlen;
> - memcpy(&uts_table, table, sizeof(uts_table));
> - uts_table.data = get_uts(table, write);
> - r = sysctl_string(&uts_table, name, nlen,
> - oldval, oldlenp, newval, newlen);
> - put_uts(table, write, uts_table.data);
> - return r;
> -}
>
> #ifdef CONFIG_SYSVIPC
> /* The generic sysctl ipc data routine. */
> @@ -2723,12 +2614,6 @@ int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
> return -ENOSYS;
> }
>
> -static int sysctl_uts_string(ctl_table *table, int __user *name, int nlen,
> - void __user *oldval, size_t __user *oldlenp,
> - void __user *newval, size_t newlen)
> -{
> - return -ENOSYS;
> -}
> 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)
> diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
> new file mode 100644
> index 0000000..324aa13
> --- /dev/null
> +++ b/kernel/utsname_sysctl.c
> @@ -0,0 +1,146 @@
> +/*
> + * Copyright (C) 2007
> + *
> + * Author: Eric Biederman <ebiederm@xmision.com>
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation, version 2 of the
> + * License.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/uts.h>
> +#include <linux/utsname.h>
> +#include <linux/version.h>
> +#include <linux/sysctl.h>
> +
> +static void *get_uts(ctl_table *table, int write)
> +{
> + char *which = table->data;
> +#ifdef CONFIG_UTS_NS
> + struct uts_namespace *uts_ns = current->nsproxy->uts_ns;
> + which = (which - (char *)&init_uts_ns) + (char *)uts_ns;
> +#endif
> + if (!write)
> + down_read(&uts_sem);
> + else
> + down_write(&uts_sem);
> + return which;
> +}
> +
> +static void put_uts(ctl_table *table, int write, void *which)
> +{
> + if (!write)
> + up_read(&uts_sem);
> + else
> + up_write(&uts_sem);
> +}
> +
> +#ifdef CONFIG_PROC_FS
> +/*
> + * Special case of dostring for the UTS structure. This has locks
> + * to observe. Should this be in kernel/sys.c ????
> + */
> +static int proc_do_uts_string(ctl_table *table, int write, struct file *filp,
> + void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> + struct ctl_table uts_table;
> + int r;
> + memcpy(&uts_table, table, sizeof(uts_table));
> + uts_table.data = get_uts(table, write);
> + r = proc_dostring(&uts_table,write,filp,buffer,lenp, ppos);
> + put_uts(table, write, uts_table.data);
> + return r;
> +}
> +#else
> +#define proc_do_uts_string NULL
> +#endif
> +
> +
> +#ifdef CONFIG_SYSCTL_SYSCALL
> +/* The generic string strategy routine: */
> +static int sysctl_uts_string(ctl_table *table, int __user *name, int nlen,
> + void __user *oldval, size_t __user *oldlenp,
> + void __user *newval, size_t newlen)
> +{
> + struct ctl_table uts_table;
> + int r, write;
> + write = newval && newlen;
> + memcpy(&uts_table, table, sizeof(uts_table));
> + uts_table.data = get_uts(table, write);
> + r = sysctl_string(&uts_table,
...
|
|
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Re: [PATCH 51/59] sysctl: Move SYSV IPC sysctls to their own file [message #17265 is a reply to message #17200] |
Wed, 17 January 2007 17:44 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) ![Go to next message Go to next message](/theme/ovz3/images/down.png) |
dev
Messages: 1693 Registered: September 2005 Location: Moscow
|
Senior Member |
![5072133](/theme/ovz3/images/icq.png)
|
|
1. I ask for not setting your authorship/copyright on the code which you just copied
from other places. Just doesn't look polite IMHO.
2. please don't name files like ipc/ipc_sysctl.c
ipc/sysctl.c sounds better IMHO.
3. any reason to introduce CONFIG_SYSVIPC_SYSCTL?
why not simply do
> +obj-$(CONFIG_SYSCTL) += sysctl.o
instead?
Kirill
> From: Eric W. Biederman <ebiederm@xmission.com> - unquoted
>
> This is just a simple cleanup to keep kernel/sysctl.c
> from getting to crowded with special cases, and by
> keeping all of the ipc logic to together it makes
> the code a little more readable.
>
> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> ---
> init/Kconfig | 6 ++
> ipc/Makefile | 1 +
> ipc/ipc_sysctl.c | 182 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
> kernel/sysctl.c | 174 ---------------------------------------------------
> 4 files changed, 189 insertions(+), 174 deletions(-)
>
> diff --git a/init/Kconfig b/init/Kconfig
> index a3f83e2..33bc38d 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -116,6 +116,12 @@ config SYSVIPC
> section 6.4 of the Linux Programmer's Guide, available from
> <http://www.tldp.org/guides.html>.
>
> +config SYSVIPC_SYSCTL
> + bool
> + depends on SYSVIPC
> + depends on SYSCTL
> + default y
> +
> config IPC_NS
> bool "IPC Namespaces"
> depends on SYSVIPC
> diff --git a/ipc/Makefile b/ipc/Makefile
> index 0a6d626..b93bba6 100644
> --- a/ipc/Makefile
> +++ b/ipc/Makefile
> @@ -4,6 +4,7 @@
>
> obj-$(CONFIG_SYSVIPC_COMPAT) += compat.o
> obj-$(CONFIG_SYSVIPC) += util.o msgutil.o msg.o sem.o shm.o
> +obj-$(CONFIG_SYSVIPC_SYSCTL) += ipc_sysctl.o
> obj_mq-$(CONFIG_COMPAT) += compat_mq.o
> obj-$(CONFIG_POSIX_MQUEUE) += mqueue.o msgutil.o $(obj_mq-y)
>
> diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
> new file mode 100644
> index 0000000..9018009
> --- /dev/null
> +++ b/ipc/ipc_sysctl.c
> @@ -0,0 +1,182 @@
> +/*
> + * Copyright (C) 2007
> + *
> + * Author: Eric Biederman <ebiederm@xmision.com>
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation, version 2 of the
> + * License.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/ipc.h>
> +#include <linux/nsproxy.h>
> +#include <linux/sysctl.h>
> +
> +#ifdef CONFIG_IPC_NS
> +static void *get_ipc(ctl_table *table)
> +{
> + 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) ((T)->data)
> +#endif
> +
> +#ifdef CONFIG_PROC_FS
> +static int proc_ipc_dointvec(ctl_table *table, int write, struct file *filp,
> + void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> + struct ctl_table ipc_table;
> + memcpy(&ipc_table, table, sizeof(ipc_table));
> + ipc_table.data = get_ipc(table);
> +
> + return proc_dointvec(&ipc_table, write, filp, buffer, lenp, ppos);
> +}
> +
> +static int proc_ipc_doulongvec_minmax(ctl_table *table, int write,
> + struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> + struct ctl_table ipc_table;
> + memcpy(&ipc_table, table, sizeof(ipc_table));
> + ipc_table.data = get_ipc(table);
> +
> + return proc_doulongvec_minmax(&ipc_table, write, filp, buffer,
> + lenp, ppos);
> +}
> +
> +#else
> +#define proc_ipc_do_ulongvec_minmax NULL
> +#define proc_ipc_do_intvec NULL
> +#endif
> +
> +#ifdef CONFIG_SYSCTL_SYSCALL
> +/* 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);
> + 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;
> +}
> +#else
> +#define sysctl_ipc_data NULL
> +#endif
> +
> +static struct ctl_table ipc_kern_table[] = {
> + {
> + .ctl_name = KERN_SHMMAX,
> + .procname = "shmmax",
> + .data = &init_ipc_ns.shm_ctlmax,
> + .maxlen = sizeof (init_ipc_ns.shm_ctlmax),
> + .mode = 0644,
> + .proc_handler = proc_ipc_doulongvec_minmax,
> + .strategy = sysctl_ipc_data,
> + },
> + {
> + .ctl_name = KERN_SHMALL,
> + .procname = "shmall",
> + .data = &init_ipc_ns.shm_ctlall,
> + .maxlen = sizeof (init_ipc_ns.shm_ctlall),
> + .mode = 0644,
> + .proc_handler = proc_ipc_doulongvec_minmax,
> + .strategy = sysctl_ipc_data,
> + },
> + {
> + .ctl_name = KERN_SHMMNI,
> + .procname = "shmmni",
> + .data = &init_ipc_ns.shm_ctlmni,
> + .maxlen = sizeof (init_ipc_ns.shm_ctlmni),
> + .mode = 0644,
> + .proc_handler = proc_ipc_dointvec,
> + .strategy = sysctl_ipc_data,
> + },
> + {
> + .ctl_name = KERN_MSGMAX,
> + .procname = "msgmax",
> + .data = &init_ipc_ns.msg_ctlmax,
> + .maxlen = sizeof (init_ipc_ns.msg_ctlmax),
> + .mode = 0644,
> + .proc_handler = proc_ipc_dointvec,
> + .strategy = sysctl_ipc_data,
> + },
> + {
> + .ctl_name = KERN_MSGMNI,
> + .procname = "msgmni",
> + .data = &init_ipc_ns.msg_ctlmni,
> + .maxlen = sizeof (init_ipc_ns.msg_ctlmni),
> + .mode = 0644,
> + .proc_handler = proc_ipc_dointvec,
> + .strategy = sysctl_ipc_data,
> + },
> + {
> + .ctl_name = KERN_MSGMNB,
> + .procname = "msgmnb",
> + .data = &init_ipc_ns.msg_ctlmnb,
> + .maxlen = sizeof (init_ipc_ns.msg_ctlmnb),
> + .mode = 0644,
> + .proc_handler = proc_ipc_dointvec,
> + .strategy = sysctl_ipc_data,
> + },
> + {
> + .ctl_name = KERN_SEM,
> + .procname = "sem",
> + .data = &init_ipc_ns.sem_ctls,
> + .maxlen = 4*sizeof (int),
> + .mode = 0644,
> + .proc_handler = proc_ipc_dointvec,
> + .strategy = sysctl_ipc_data,
> + },
> + {}
> +};
> +
> +static struct ctl_table ipc_root_table[] = {
> + {
> + .ctl_name = CTL_KERN,
> + .procname = "kernel",
> + .mode = 0555,
> + .child = ipc_kern_table,
> + },
> + {}
> +};
> +
> +static int __init ipc_sysctl_init(void)
> +{
> + register_sysctl_table(ipc_root_table, 0);
> + return 0;
> +}
> +
> +__initcall(ipc_sysctl_init);
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index a8c0a03..6e2e608 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> @@ -90,12 +90,6 @@ extern char modprobe_path[];
> #ifdef CONFIG_CHR_DEV_SG
> extern int sg_big_buff;
> #endif
> -#ifdef CONFIG_SYSVIPC
> -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 __sparc__
> extern char reboot_command [];
> @@ -135,11 +129,6 @@ static int parse_table(int __user *, int, void __user *, size_t __user *,
> void __user *, size_t, ctl_table *);
> #endif
>
> -#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,
> @@ -168,17 +157,6 @@ 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: */
>
> @@ -400,71 +378,6 @@ static ctl_table kern_table[] = {
> .proc_handler = &proc_dointvec,
> },
> #endif
> -#ifdef CONFIG_SYSVIPC
> - {
> - .ctl_name = KERN_SHMMAX,
> - .procname = "shmmax",
> - .data = &init_ipc_ns.shm_ctlmax,
> - .maxlen = sizeof (init_ipc_ns.shm_ctlmax),
> - .mode = 0644,
> - .proc_handler = &proc_ipc_doulongvec_minmax,
> - .strategy = sysctl_ipc_data,
> - },
> - {
> - .ctl_name = KERN_SHMALL,
> - .procname = "shmall",
> - .data = &init_ipc_ns.shm_ctlall,
> - .maxlen = sizeof (init_ipc_ns.shm_ctlall),
> - .mode = 0644,
> - .proc_handler = &proc_ipc_doulongvec_minmax,
> - .strategy = sysctl_ipc_data,
> - },
> - {
> - .ctl_name = KERN_SHMMNI,
> - .procname = "shmmni",
> - .data = &init_ipc_ns.shm_ctlmni,
> - .maxlen = sizeof (init_ipc_ns.shm_ctlmni),
> - .mode = 0644,
> - .proc_handler = &proc_ipc_dointvec,
> - .strategy = sysctl_ipc_data,
> - },
> - {
> - .ctl_name = KERN_MSGMAX,
> - .procname = "msgmax",
> - .data = &init_ipc_ns.msg_ctlmax,
> - .maxlen = sizeof (init_ipc_ns.msg_ctlmax),
> - .mode = 0644,
> - .proc_handler = &proc_ipc_dointvec,
> - .strategy = sysctl_ipc_data,
> - },
> - {
> - .ctl_name = KERN_MSGMNI,
> - .procname = "msgmni",
> - .data = &init_ipc_ns.msg_ctlmni,
> - .maxlen = sizeof (init_ipc_ns.msg_ctlmni),
> - .mode = 0644,
> - .proc_handler = &proc_ipc_dointvec,
> - .strategy = sysctl_ipc_data,
> - },
> - {
> - .ctl_name = KERN_MSGMNB,
> - .procname = "msgmnb",
> - .data = &init_ipc_ns.msg_ctlmnb,
> - .maxlen = sizeof (init_ipc_ns.msg_ctlmnb),
> - .mode = 0644,
> - .proc_handler = &proc_ipc_dointvec,
> - .strategy = sysctl_ipc_data,
> - },
> - {
> - .ctl_name = KERN_SEM,
> - .procname = "sem",
> - .data = &init_ipc_ns.sem_ctls,
> - .maxlen = 4*sizeof (int),
> - .mode = 0644,
> - .proc_handler = &proc_ipc_dointvec,
> - .strategy = sysctl_ipc_data,
> - },
> -#endif
> #ifdef CONFIG_MAGIC_SYSRQ
> {
> .ctl_name = KERN_SYSRQ,
> @@ -2240,27 +2153,6 @@ int proc_dointvec_ms_jiffies(ctl_table *table, int write, struct file *filp,
> do_proc_dointvec_ms_jiffies_conv, NULL);
> }
>
> -#ifdef CONFIG_SYSVIPC
> -static int proc_ipc_dointvec(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_dointvec(which, table, write, filp, buffer,
> - lenp, ppos, NULL, NULL);
> -}
> -
> -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,
> void __user *buffer, size_t *lenp, loff_t *ppos)
> {
> @@ -2291,25 +2183,6 @@ int proc_dostring(ctl_table *table, int write, struct file *filp,
> return -ENOSYS;
> }
>
> -#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;
> -}
> -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,
> void __user *buffer, size_t *lenp, loff_t *ppos)
> {
> @@ -2509,47 +2382,6 @@ int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
>
>
>
> -#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 */
>
>
> @@ -2614,12 +2446,6 @@ int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
> return -ENOSYS;
> }
>
> -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 /* CONFIG_SYSCTL_SYSCALL */
>
> /*
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Re: [PATCH 0/59] Cleanup sysctl [message #17266 is a reply to message #17149] |
Wed, 17 January 2007 18:10 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) ![Go to next message Go to next message](/theme/ovz3/images/down.png) |
dev
Messages: 1693 Registered: September 2005 Location: Moscow
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Senior Member |
![5072133](/theme/ovz3/images/icq.png)
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Eric, really good job!
Patches: 1-13, 15-24, 26-32, 34-44, 46-49, 52-55, 57 (all except below)
Acked-By: Kirill Korotaev <dev@openvz.org>
14/59 - minor (extra space)
25/59 - minor note
33/59 - not sorted sysctl IDs
45/59 - typo
50/59 - copyright/file note
51/59 - copyright/file name/kconfig option notes
56,58,59/59 - will review tomorrow
another issue I have to think over is removal of de->owner.
Alexey Dobriyan has sent recently patching fixing /proc <-> modules refcounting.
I guess w/o these patches your changes are not safe if proc_handler or strategy
are functions from the module.
Thanks,
Kirill
> There has not been much maintenance on sysctl in years, and as a result is
> there is a lot to do to allow future interesting work to happen, and being
> ambitious I'm trying to do it all at once :)
>
> The patches in this series fall into several general categories.
>
> - Removal of useless attempts to override the standard sysctls
>
> - Registers of sysctl numbers in sysctl.h so someone else does not use
> the magic number and conflict.
>
> - C99 conversions so it becomes possible to change the layout of
> struct ctl_table without breaking everything.
>
> - Removal of useless claims of module ownership, in the proc dir entries
>
> - Removal of sys_sysctl support where people had used conflicting sysctl
> numbers. Trying to break glibc or other applications by changing the
> ABI is not cool. 9 instances of this in the kernel seems a little
> extreme.
>
> - General enhancements when I got the junk I could see out.
>
> Odds are I missed something, most of the cleanups are simply a result of
> me working on the sysctl core and glancing at the users and going: What?
>
> Eric
> _______________________________________________
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>
>
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Re: [PATCH 25/59] sysctl: C99 convert arch/frv/kernel/pm.c [message #17306 is a reply to message #17261] |
Mon, 22 January 2007 22:21 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) ![Go to next message Go to next message](/theme/ovz3/images/down.png) |
Herbert Poetzl
Messages: 239 Registered: February 2006
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Senior Member |
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On Wed, Jan 17, 2007 at 08:14:17PM +0300, Kirill Korotaev wrote:
> another small minor note.
>
> > From: Eric W. Biederman <ebiederm@xmission.com> - unquoted
> >
> > Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> > ---
> > arch/frv/kernel/pm.c | 50 +++++++++++++++++++++++++++++++++++++++++++-------
> > 1 files changed, 43 insertions(+), 7 deletions(-)
> >
> > diff --git a/arch/frv/kernel/pm.c b/arch/frv/kernel/pm.c
> > index c1840d6..aa50333 100644
> > --- a/arch/frv/kernel/pm.c
> > +++ b/arch/frv/kernel/pm.c
> > @@ -401,17 +401,53 @@ static int cm_sysctl(ctl_table *table, int __user *name, int nlen,
> >
> > static struct ctl_table pm_table[] =
> > {
> > - {CTL_PM_SUSPEND, "suspend", NULL, 0, 0200, NULL, &sysctl_pm_do_suspend},
> > - {CTL_PM_CMODE, "cmode", &clock_cmode_current, sizeof(int), 0644, NULL, &cmode_procctl, &cmode_sysctl, NULL},
> > - {CTL_PM_P0, "p0", &clock_p0_current, sizeof(int), 0644, NULL, &p0_procctl, &p0_sysctl, NULL},
> > - {CTL_PM_CM, "cm", &clock_cm_current, sizeof(int), 0644, NULL, &cm_procctl, &cm_sysctl, NULL},
> > - {0}
> > + {
> > + .ctl_name = CTL_PM_SUSPEND,
> > + .procname = "suspend",
> > + .data = NULL,
> > + .maxlen = 0,
> > + .mode = 0200,
> > + .proc_handler = &sysctl_pm_do_suspend,
> > + },
> > + {
> > + .ctl_name = CTL_PM_CMODE,
> > + .procname = "cmode",
> > + .data = &clock_cmode_current,
> > + .maxlen = sizeof(int),
> > + .mode = 0644,
> > + .proc_handler = &cmode_procctl,
> > + .strategy = &cmode_sysctl,
> > + },
> > + {
> > + .ctl_name = CTL_PM_P0,
> > + .procname = "p0",
> > + .data = &clock_p0_current,
> > + .maxlen = sizeof(int),
> > + .mode = 0644,
> > + .proc_handler = &p0_procctl,
> > + .strategy = &p0_sysctl,
> > + },
> > + {
> > + .ctl_name = CTL_PM_CM,
> > + .procname = "cm",
> > + .data = &clock_cm_current,
> > + .maxlen = sizeof(int),
> > + .mode = 0644,
> > + .proc_handler = &cm_procctl,
> > + .strategy = &cm_sysctl,
> > + },
> > + { .ctl_name = 0}
> in next patch (26/59) you write just "{ }". .ctl_name = 0 not required here.
I'd prefer '{ 0 }' here, but I'm fine with the '{ .ctl_name = 0 }'
too, just '{ }' seems confusing, and it actually might get
misinterpreted too ..
best,
Herbert
> > };
> >
> > static struct ctl_table pm_dir_table[] =
> > {
> > - {CTL_PM, "pm", NULL, 0, 0555, pm_table},
> > - {0}
> > + {
> > + .ctl_name = CTL_PM,
> > + .procname = "pm",
> > + .mode = 0555,
> > + .child = pm_table,
> > + },
> > + { .ctl_name = 0}
> > };
> >
> > /*
>
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Re: [PATCH 50/59] sysctl: Move utsname sysctls to their own file [message #17307 is a reply to message #17233] |
Mon, 22 January 2007 22:24 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) ![Go to next message Go to next message](/theme/ovz3/images/down.png) |
Herbert Poetzl
Messages: 239 Registered: February 2006
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Senior Member |
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On Wed, Jan 17, 2007 at 12:31:22PM -0700, Eric W. Biederman wrote:
> Kirill Korotaev <dev@sw.ru> writes:
>
> > Eric, though I personally don't care much:
> > 1. I ask for not setting your authorship/copyright on the code which you just
> > copied
> > from other places. Just doesn't look polite IMHO.
>
> I can't claim complete ownership of the code, there was plenty of feed back
> and contributions from others but the final form without a big switch
> statement is mine. I certainly can't claim the table, it has been in
> that form for years.
>
> If you notice I actually didn't say whose copyright it was :) just
> that I wrote the file.
>
> If there are copyright claims I should include I will be happy to do that.
> Mostly I was just trying to find some stupid boiler plate that would work.
IMHO that is fine ...
> > 2. I would propose to not introduce utsname_sysctl.c.
> > both files are too small and minor that I can't see much reasons splitting
> > them.
>
> The impact of moving this code out of sysctl.c is a major
> simplification, to sysctl.c. Putting them in their own file means we
> can cleanly restrict the code to only be compiled CONFIG_SYSCTL is set.
>
> It is a necessary first step to implementing a per process /proc/sys.
>
> It reorganizes the ipc and utsname sysctl from a terribly fragile
> structure to something that is robust and easy to follow. Code
> scattered all throughout sysctl.c was just a disaster. We had
> several instances of having to fix bugs with odd combinations of
> CONFIG options, simply because the other spot that needed to be touched
> wasn't obvious.
>
> So from my perspective this is an extremely worthwhile change that
> will make maintenance easier and is a small first step towards
> some nice future functionality.
yep, agreed ...
best,
Herbert
> Eric
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Re: [PATCH 49/59] sysctl: Move init_irq_proc into init/main where it belongs [message #17400 is a reply to message #17198] |
Sat, 27 January 2007 10:51 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) |
Andrew Morton
Messages: 127 Registered: December 2005
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Senior Member |
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On Tue, 16 Jan 2007 09:39:54 -0700
"Eric W. Biederman" <ebiederm@xmission.com> wrote:
> From: Eric W. Biederman <ebiederm@xmission.com> - unquoted
>
> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> ---
> init/main.c | 3 +++
> kernel/sysctl.c | 3 ---
> 2 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/init/main.c b/init/main.c
> index 8b4a7d7..8af5c6e 100644
> --- a/init/main.c
> +++ b/init/main.c
> @@ -691,6 +691,9 @@ static void __init do_basic_setup(void)
> #ifdef CONFIG_SYSCTL
> sysctl_init();
> #endif
> +#ifdef CONFIG_PROC_FS
> + init_irq_proc();
> +#endif
>
> do_initcalls();
> }
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index 600b333..7420761 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> @@ -1172,8 +1172,6 @@ static ctl_table dev_table[] = {
> { .ctl_name = 0 }
> };
>
> -extern void init_irq_proc (void);
> -
> static DEFINE_SPINLOCK(sysctl_lock);
>
> /* called under sysctl_lock */
> @@ -1219,7 +1217,6 @@ void __init sysctl_init(void)
> {
> #ifdef CONFIG_PROC_SYSCTL
> register_proc_table(root_table, proc_sys_root, &root_table_header);
> - init_irq_proc();
> #endif
> }
sparc64:
init/main.c: In function `do_basic_setup':
init/main.c:707: warning: implicit declaration of function `init_irq_proc'
I couldn't be bothered working out how init/main.c is supposed to get at
its declaration of init_irq_proc(). It's not allowed to include
linux/irq.h.
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