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TOMOYO Linux Cross Reference
Linux/include/uapi/linux/watch_queue.h

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Diff markup

Differences between /include/uapi/linux/watch_queue.h (Architecture m68k) and /include/uapi/linux/watch_queue.h (Architecture sparc)


  1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux      1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2 #ifndef _UAPI_LINUX_WATCH_QUEUE_H                   2 #ifndef _UAPI_LINUX_WATCH_QUEUE_H
  3 #define _UAPI_LINUX_WATCH_QUEUE_H                   3 #define _UAPI_LINUX_WATCH_QUEUE_H
  4                                                     4 
  5 #include <linux/types.h>                            5 #include <linux/types.h>
  6 #include <linux/fcntl.h>                            6 #include <linux/fcntl.h>
  7 #include <linux/ioctl.h>                            7 #include <linux/ioctl.h>
  8                                                     8 
  9 #define O_NOTIFICATION_PIPE     O_EXCL  /* Par      9 #define O_NOTIFICATION_PIPE     O_EXCL  /* Parameter to pipe2() selecting notification pipe */
 10                                                    10 
 11 #define IOC_WATCH_QUEUE_SET_SIZE        _IO('W     11 #define IOC_WATCH_QUEUE_SET_SIZE        _IO('W', 0x60)  /* Set the size in pages */
 12 #define IOC_WATCH_QUEUE_SET_FILTER      _IO('W     12 #define IOC_WATCH_QUEUE_SET_FILTER      _IO('W', 0x61)  /* Set the filter */
 13                                                    13 
 14 enum watch_notification_type {                     14 enum watch_notification_type {
 15         WATCH_TYPE_META         = 0,    /* Spe     15         WATCH_TYPE_META         = 0,    /* Special record */
 16         WATCH_TYPE_KEY_NOTIFY   = 1,    /* Key     16         WATCH_TYPE_KEY_NOTIFY   = 1,    /* Key change event notification */
 17         WATCH_TYPE__NR          = 2                17         WATCH_TYPE__NR          = 2
 18 };                                                 18 };
 19                                                    19 
 20 enum watch_meta_notification_subtype {             20 enum watch_meta_notification_subtype {
 21         WATCH_META_REMOVAL_NOTIFICATION = 0,       21         WATCH_META_REMOVAL_NOTIFICATION = 0,    /* Watched object was removed */
 22         WATCH_META_LOSS_NOTIFICATION    = 1,       22         WATCH_META_LOSS_NOTIFICATION    = 1,    /* Data loss occurred */
 23 };                                                 23 };
 24                                                    24 
 25 /*                                                 25 /*
 26  * Notification record header.  This is aligne     26  * Notification record header.  This is aligned to 64-bits so that subclasses
 27  * can contain __u64 fields.                       27  * can contain __u64 fields.
 28  */                                                28  */
 29 struct watch_notification {                        29 struct watch_notification {
 30         __u32                   type:24;           30         __u32                   type:24;        /* enum watch_notification_type */
 31         __u32                   subtype:8;         31         __u32                   subtype:8;      /* Type-specific subtype (filterable) */
 32         __u32                   info;              32         __u32                   info;
 33 #define WATCH_INFO_LENGTH       0x0000007f         33 #define WATCH_INFO_LENGTH       0x0000007f      /* Length of record */
 34 #define WATCH_INFO_LENGTH__SHIFT 0                 34 #define WATCH_INFO_LENGTH__SHIFT 0
 35 #define WATCH_INFO_ID           0x0000ff00         35 #define WATCH_INFO_ID           0x0000ff00      /* ID of watchpoint */
 36 #define WATCH_INFO_ID__SHIFT    8                  36 #define WATCH_INFO_ID__SHIFT    8
 37 #define WATCH_INFO_TYPE_INFO    0xffff0000         37 #define WATCH_INFO_TYPE_INFO    0xffff0000      /* Type-specific info */
 38 #define WATCH_INFO_TYPE_INFO__SHIFT 16             38 #define WATCH_INFO_TYPE_INFO__SHIFT 16
 39 #define WATCH_INFO_FLAG_0       0x00010000         39 #define WATCH_INFO_FLAG_0       0x00010000      /* Type-specific info, flag bit 0 */
 40 #define WATCH_INFO_FLAG_1       0x00020000         40 #define WATCH_INFO_FLAG_1       0x00020000      /* ... */
 41 #define WATCH_INFO_FLAG_2       0x00040000         41 #define WATCH_INFO_FLAG_2       0x00040000
 42 #define WATCH_INFO_FLAG_3       0x00080000         42 #define WATCH_INFO_FLAG_3       0x00080000
 43 #define WATCH_INFO_FLAG_4       0x00100000         43 #define WATCH_INFO_FLAG_4       0x00100000
 44 #define WATCH_INFO_FLAG_5       0x00200000         44 #define WATCH_INFO_FLAG_5       0x00200000
 45 #define WATCH_INFO_FLAG_6       0x00400000         45 #define WATCH_INFO_FLAG_6       0x00400000
 46 #define WATCH_INFO_FLAG_7       0x00800000         46 #define WATCH_INFO_FLAG_7       0x00800000
 47 };                                                 47 };
 48                                                    48 
 49 /*                                                 49 /*
 50  * Notification filtering rules (IOC_WATCH_QUE     50  * Notification filtering rules (IOC_WATCH_QUEUE_SET_FILTER).
 51  */                                                51  */
 52 struct watch_notification_type_filter {            52 struct watch_notification_type_filter {
 53         __u32   type;                   /* Typ     53         __u32   type;                   /* Type to apply filter to */
 54         __u32   info_filter;            /* Fil     54         __u32   info_filter;            /* Filter on watch_notification::info */
 55         __u32   info_mask;              /* Mas     55         __u32   info_mask;              /* Mask of relevant bits in info_filter */
 56         __u32   subtype_filter[8];      /* Bit     56         __u32   subtype_filter[8];      /* Bitmask of subtypes to filter on */
 57 };                                                 57 };
 58                                                    58 
 59 struct watch_notification_filter {                 59 struct watch_notification_filter {
 60         __u32   nr_filters;             /* Num     60         __u32   nr_filters;             /* Number of filters */
 61         __u32   __reserved;             /* Mus     61         __u32   __reserved;             /* Must be 0 */
 62         struct watch_notification_type_filter      62         struct watch_notification_type_filter filters[];
 63 };                                                 63 };
 64                                                    64 
 65                                                    65 
 66 /*                                                 66 /*
 67  * Extended watch removal notification.  This      67  * Extended watch removal notification.  This is used optionally if the type
 68  * wants to indicate an identifier for the obj     68  * wants to indicate an identifier for the object being watched, if there is
 69  * such.  This can be distinguished by the len     69  * such.  This can be distinguished by the length.
 70  *                                                 70  *
 71  * type -> WATCH_TYPE_META                         71  * type -> WATCH_TYPE_META
 72  * subtype -> WATCH_META_REMOVAL_NOTIFICATION      72  * subtype -> WATCH_META_REMOVAL_NOTIFICATION
 73  */                                                73  */
 74 struct watch_notification_removal {                74 struct watch_notification_removal {
 75         struct watch_notification watch;           75         struct watch_notification watch;
 76         __u64   id;             /* Type-depend     76         __u64   id;             /* Type-dependent identifier */
 77 };                                                 77 };
 78                                                    78 
 79 /*                                                 79 /*
 80  * Type of key/keyring change notification.        80  * Type of key/keyring change notification.
 81  */                                                81  */
 82 enum key_notification_subtype {                    82 enum key_notification_subtype {
 83         NOTIFY_KEY_INSTANTIATED = 0, /* Key wa     83         NOTIFY_KEY_INSTANTIATED = 0, /* Key was instantiated (aux is error code) */
 84         NOTIFY_KEY_UPDATED      = 1, /* Key wa     84         NOTIFY_KEY_UPDATED      = 1, /* Key was updated */
 85         NOTIFY_KEY_LINKED       = 2, /* Key (a     85         NOTIFY_KEY_LINKED       = 2, /* Key (aux) was added to watched keyring */
 86         NOTIFY_KEY_UNLINKED     = 3, /* Key (a     86         NOTIFY_KEY_UNLINKED     = 3, /* Key (aux) was removed from watched keyring */
 87         NOTIFY_KEY_CLEARED      = 4, /* Keyrin     87         NOTIFY_KEY_CLEARED      = 4, /* Keyring was cleared */
 88         NOTIFY_KEY_REVOKED      = 5, /* Key wa     88         NOTIFY_KEY_REVOKED      = 5, /* Key was revoked */
 89         NOTIFY_KEY_INVALIDATED  = 6, /* Key wa     89         NOTIFY_KEY_INVALIDATED  = 6, /* Key was invalidated */
 90         NOTIFY_KEY_SETATTR      = 7, /* Key's      90         NOTIFY_KEY_SETATTR      = 7, /* Key's attributes got changed */
 91 };                                                 91 };
 92                                                    92 
 93 /*                                                 93 /*
 94  * Key/keyring notification record.                94  * Key/keyring notification record.
 95  * - watch.type = WATCH_TYPE_KEY_NOTIFY            95  * - watch.type = WATCH_TYPE_KEY_NOTIFY
 96  * - watch.subtype = enum key_notification_typ     96  * - watch.subtype = enum key_notification_type
 97  */                                                97  */
 98 struct key_notification {                          98 struct key_notification {
 99         struct watch_notification watch;           99         struct watch_notification watch;
100         __u32   key_id;         /* The key/key    100         __u32   key_id;         /* The key/keyring affected */
101         __u32   aux;            /* Per-type au    101         __u32   aux;            /* Per-type auxiliary data */
102 };                                                102 };
103                                                   103 
104 #endif /* _UAPI_LINUX_WATCH_QUEUE_H */            104 #endif /* _UAPI_LINUX_WATCH_QUEUE_H */
105                                                   105 

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