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2011-05-10ns: proc files for namespace naming policy.Eric W. Biederman
Create files under /proc/<pid>/ns/ to allow controlling the namespaces of a process. This addresses three specific problems that can make namespaces hard to work with. - Namespaces require a dedicated process to pin them in memory. - It is not possible to use a namespace unless you are the child of the original creator. - Namespaces don't have names that userspace can use to talk about them. The namespace files under /proc/<pid>/ns/ can be opened and the file descriptor can be used to talk about a specific namespace, and to keep the specified namespace alive. A namespace can be kept alive by either holding the file descriptor open or bind mounting the file someplace else. aka: mount --bind /proc/self/ns/net /some/filesystem/path mount --bind /proc/self/fd/<N> /some/filesystem/path This allows namespaces to be named with userspace policy. It requires additional support to make use of these filedescriptors and that will be comming in the following patches. Acked-by: Daniel Lezcano <daniel.lezcano@free.fr> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2011-01-13proc: move proc_console.c to fs/proc/consoles.cAlexey Dobriyan
Filename is supposed to match procfile name for random junk. Add __init while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-16console: add /proc/consolesJiri Slaby
It allows users to see what consoles are currently known to the system and with what flags. It is based on Werner's patch, the part about traversing fds was removed, the code was moved to kernel/printk.c, where consoles are handled and it makes more sense to me. Signed-off-by: Jiri Slaby <jslaby@suse.cz> [cleanups] Signed-off-by: "Dr. Werner Fink" <werner@suse.de> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-11procfs: simplify conditional processing of fs/proc.o.Robert P. J. Day
Since the entire fs/proc directory is conditionally included based on CONFIG_PROC_FS, it's redundant to check that same variable within that directory. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18proc: export statistics for softirq to /procKeika Kobayashi
Export statistics for softirq in /proc/softirqs and /proc/stat. 1. /proc/softirqs Implement /proc/softirqs which shows the number of softirq for each CPU like /proc/interrupts. 2. /proc/stat Add the "softirq" line to /proc/stat. This line shows the number of softirq for all cpu. The first column is the total of all softirqs and each subsequent column is the total for particular softirq. [kosaki.motohiro@jp.fujitsu.com: remove redundant for_each_possible_cpu() loop] Signed-off-by: Keika Kobayashi <kobayashi.kk@ncos.nec.co.jp> Reviewed-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Eric Dumazet <dada1@cosmosbay.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-23proc: remove fs/proc/proc_misc.cAlexey Dobriyan
Now that everything was moved to their more or less expected places, apply rm(1). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move pagecount stuff to fs/proc/page.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/stat to fs/proc/stat.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/cpuinfo code to fs/proc/cpuinfo.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/devices code to fs/proc/devices.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/cmdline to seq_fileAlexey Dobriyan
and move it to fs/proc/cmdline.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/version to seq_fileAlexey Dobriyan
and move it to fs/proc/version.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/meminfo to seq_fileAlexey Dobriyan
and move it to fs/proc/meminfo.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/uptime to seq_fileAlexey Dobriyan
and move it to fs/proc/uptime.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/loadavg to seq_fileAlexey Dobriyan
and move it to fs/proc/loadavg.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2007-10-10[NET]: Make /proc/net per network namespaceEric W. Biederman
This patch makes /proc/net per network namespace. It modifies the global variables proc_net and proc_net_stat to be per network namespace. The proc_net file helpers are modified to take a network namespace argument, and all of their callers are fixed to pass &init_net for that argument. This ensures that all of the /proc/net files are only visible and usable in the initial network namespace until the code behind them has been updated to be handle multiple network namespaces. Making /proc/net per namespace is necessary as at least some files in /proc/net depend upon the set of network devices which is per network namespace, and even more files in /proc/net have contents that are relevant to a single network namespace. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-27[PATCH] Fix kernel build with EMBEDDED & PROC_FS & !PROC_SYSCTLMika Kukkonen
Without attached patch against current -git I get following with !PROC_SYSCTL (with EMBEDDED and PROC_FS set): CC init/version.o LD init/built-in.o LD vmlinux fs/built-in.o: In function `do_proc_sys_lookup': proc_sysctl.c:(.text+0x26583): undefined reference to `sysctl_head_next' fs/built-in.o: In function `proc_sys_revalidate': proc_sysctl.c:(.text+0x265bb): undefined reference to `sysctl_head_finish' fs/built-in.o: In function `proc_sys_readdir': proc_sysctl.c:(.text+0x26720): undefined reference to `sysctl_head_next' proc_sysctl.c:(.text+0x267d8): undefined reference to `sysctl_head_finish' proc_sysctl.c:(.text+0x268e7): undefined reference to `sysctl_head_next' proc_sysctl.c:(.text+0x26910): undefined reference to `sysctl_head_finish' fs/built-in.o: In function `proc_sys_write': proc_sysctl.c:(.text+0x2695d): undefined reference to `sysctl_perm' proc_sysctl.c:(.text+0x2699c): undefined reference to `sysctl_head_finish' fs/built-in.o: In function `proc_sys_read': proc_sysctl.c:(.text+0x269e9): undefined reference to `sysctl_perm' proc_sysctl.c:(.text+0x26a25): undefined reference to `sysctl_head_finish' fs/built-in.o: In function `proc_sys_permission': proc_sysctl.c:(.text+0x26ad1): undefined reference to `sysctl_perm' proc_sysctl.c:(.text+0x26adb): undefined reference to `sysctl_head_finish' fs/built-in.o: In function `proc_sys_lookup': proc_sysctl.c:(.text+0x26b39): undefined reference to `sysctl_head_finish' make: *** [vmlinux] Virhe 1 All those functions are in fs/proc/proc_sysctl.c, which has no CONFIG_ #define's in it, so the patch makes the compilation of that file to depend on CONFIG_PROC_SYSCTL (the simplest choice). Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14[PATCH] sysctl: reimplement the sysctl proc supportEric W. Biederman
With this change the sysctl inodes can be cached and nothing needs to be done when removing a sysctl table. For a cost of 2K code we will save about 4K of static tables (when we remove de from ctl_table) and 70K in proc_dir_entries that we will not allocate, or about half that on a 32bit arch. The speed feels about the same, even though we can now cache the sysctl dentries :( We get the core advantage that we don't need to have a 1 to 1 mapping between ctl table entries and proc files. Making it possible to have /proc/sys vary depending on the namespace you are in. The currently merged namespaces don't have an issue here but the network namespace under /proc/sys/net needs to have different directories depending on which network adapters are visible. By simply being a cache different directories being visible depending on who you are is trivial to implement. [akpm@osdl.org: fix uninitialised var] [akpm@osdl.org: fix ARM build] [bunk@stusta.de: make things static] Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-07[PATCH] remove the syslog interface when printk is disabledMike Galbraith
Attempts to read() from the non-existent dmesg buffer will return zero and userspace tends to get stuck in a busyloop. So just remove /dev/kmsg altogether if CONFIG_PRINTK=n. Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25[PATCH] kdump: Access dump file in elf format (/proc/vmcore)Vivek Goyal
From: "Vivek Goyal" <vgoyal@in.ibm.com> o Support for /proc/vmcore interface. This interface exports elf core image either in ELF32 or ELF64 format, depending on the format in which elf headers have been stored by crashed kernel. o Added support for CONFIG_VMCORE config option. o Removed the dependency on /proc/kcore. From: "Eric W. Biederman" <ebiederm@xmission.com> This patch has been refactored to more closely match the prevailing style in the affected files. And to clearly indicate the dependency between /proc/kcore and proc/vmcore.c From: Hariprasad Nellitheertha <hari@in.ibm.com> This patch contains the code that provides an ELF format interface to the previous kernel's memory post kexec reboot. Signed off by Hariprasad Nellitheertha <hari@in.ibm.com> Signed-off-by: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!