Unverified Commit c72d9146 authored by Christian Brauner's avatar Christian Brauner
Browse files

coredump: show supported coredump modes 

Allow userspace to discover what coredump modes are supported.

Link: https://lore.kernel.org/20250516-work-coredump-socket-v8-6-664f3caf2516@kernel.org


Acked-by: default avatarLuca Boccassi <luca.boccassi@gmail.com>
Reviewed-by: default avatarJann Horn <jannh@google.com>
Reviewed-by: default avatarAlexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 1d8db6fd

fs/coredump.c

+13 −0
Original line number Diff line number Diff line
@@ -1248,6 +1248,12 @@ static int proc_dostring_coredump(const struct ctl_table *table, int write, 


static const unsigned int core_file_note_size_min = CORE_FILE_NOTE_SIZE_DEFAULT;

static const unsigned int core_file_note_size_max = CORE_FILE_NOTE_SIZE_MAX;

static char core_modes[] = {

	"file\npipe"

#ifdef CONFIG_UNIX

	"\nsocket"

#endif

};



static const struct ctl_table coredump_sysctls[] = {

	{
@@ -1291,6 +1297,13 @@ static const struct ctl_table coredump_sysctls[] = { 
		.extra1		= SYSCTL_ZERO,

		.extra2		= SYSCTL_ONE,

	},

	{

		.procname	= "core_modes",

		.data		= core_modes,

		.maxlen		= sizeof(core_modes) - 1,

		.mode		= 0444,

		.proc_handler	= proc_dostring,

	},

};



static int __init init_fs_coredump_sysctls(void)