diff options
Diffstat (limited to 'sys/sys/filedesc.h')
| -rw-r--r-- | sys/sys/filedesc.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sys/sys/filedesc.h b/sys/sys/filedesc.h index e1d2363..ca980ef 100644 --- a/sys/sys/filedesc.h +++ b/sys/sys/filedesc.h @@ -38,6 +38,7 @@ #include <sys/event.h> #include <sys/lock.h> #include <sys/priority.h> +#include <sys/seq.h> #include <sys/sx.h> #include <machine/_limits.h> @@ -50,14 +51,16 @@ struct filecaps { }; struct filedescent { - struct file *fde_file; /* file structure for open file */ - struct filecaps fde_caps; /* per-descriptor rights */ - uint8_t fde_flags; /* per-process open file flags */ + struct file *fde_file; /* file structure for open file */ + struct filecaps fde_caps; /* per-descriptor rights */ + uint8_t fde_flags; /* per-process open file flags */ + seq_t fde_seq; /* keep file and caps in sync */ }; #define fde_rights fde_caps.fc_rights #define fde_fcntls fde_caps.fc_fcntls #define fde_ioctls fde_caps.fc_ioctls #define fde_nioctls fde_caps.fc_nioctls +#define fde_change_size (offsetof(struct filedescent, fde_seq)) /* * This structure is used for the management of descriptors. It may be @@ -82,6 +85,7 @@ struct filedesc { int fd_holdleaderscount; /* block fdfree() for shared close() */ int fd_holdleaderswakeup; /* fdfree() needs wakeup */ }; +#define fd_seq(fdp, fd) (&(fdp)->fd_ofiles[(fd)].fde_seq) /* * Structure to keep track of (process leader, struct fildedesc) tuples. |
