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| author | Christian Brauner <brauner@kernel.org> | 2025-05-16 13:25:33 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-05-21 13:59:12 +0200 |
| commit | c72d9146375fa12becb4657b4d2105a460bfb058 (patch) | |
| tree | 1637d90e988a5fa9430ad247f7a06d4df1d1f95b | |
| parent | 1d8db6fd698de1f73b1a7d72aea578fdd18d9a87 (diff) | |
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: Luca Boccassi <luca.boccassi@gmail.com>
Reviewed-by: Jann Horn <jannh@google.com>
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | fs/coredump.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/coredump.c b/fs/coredump.c index b0ee99992ea5..84cddfe6e970 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -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) |