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| author | Matthew Bobrowski <repnop@google.com> | 2021-08-08 08:25:58 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2021-08-10 13:55:37 +0300 |
| commit | 0aca67bb7f0d8c997dfef8ff0bfeb0afb361f0e6 (patch) | |
| tree | ea67a7e163a2d6cf24d18212da2c525ce6afb0a7 /include/linux/fanotify.h | |
| parent | d3424c9bac893bd06f38a20474cd622881d384ca (diff) | |
| download | linux-0aca67bb7f0d8c997dfef8ff0bfeb0afb361f0e6.tar.xz | |
fanotify: introduce a generic info record copying helper
The copy_info_records_to_user() helper allows for the separation of
info record copying routines/conditionals from copy_event_to_user(),
which reduces the overall clutter within this function. This becomes
especially true as we start introducing additional info records in the
future i.e. struct fanotify_event_info_pidfd. On success, this helper
returns the total amount of bytes that have been copied into the user
supplied buffer and on error, a negative value is returned to the
caller.
The newly defined macro FANOTIFY_INFO_MODES can be used to obtain info
record types that have been enabled for a specific notification
group. This macro becomes useful in the subsequent patch when the
FAN_REPORT_PIDFD initialization flag is introduced.
Link: https://lore.kernel.org/r/8872947dfe12ce8ae6e9a7f2d49ea29bc8006af0.1628398044.git.repnop@google.com
Signed-off-by: Matthew Bobrowski <repnop@google.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'include/linux/fanotify.h')
| -rw-r--r-- | include/linux/fanotify.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h index a16dbeced152..10a7e26ddba6 100644 --- a/include/linux/fanotify.h +++ b/include/linux/fanotify.h @@ -27,6 +27,8 @@ extern struct ctl_table fanotify_table[]; /* for sysctl */ #define FANOTIFY_FID_BITS (FAN_REPORT_FID | FAN_REPORT_DFID_NAME) +#define FANOTIFY_INFO_MODES (FANOTIFY_FID_BITS) + /* * fanotify_init() flags that require CAP_SYS_ADMIN. * We do not allow unprivileged groups to request permission events. |