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Make the structure definitions in the man pages match the real code, and

remove no longer valid caution.

Approved by:	re (kensmith)
This commit is contained in:
Konstantin Belousov 2009-06-29 18:54:17 +00:00
parent 7850fa71f5
commit 8c8484d103
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=195172
3 changed files with 7 additions and 25 deletions

View File

@ -71,12 +71,8 @@ struct msqid_ds {
pid_t msg_lspid; /* pid of last msgsnd() */
pid_t msg_lrpid; /* pid of last msgrcv() */
time_t msg_stime; /* time of last msgsnd() */
long msg_pad1;
time_t msg_rtime; /* time of last msgrcv() */
long msg_pad2;
time_t msg_ctime; /* time of last msgctl() */
long msg_pad3;
long msg_pad4[4];
};
.Ed
.Pp
@ -89,11 +85,11 @@ structure is defined in
and looks like this:
.Bd -literal
struct ipc_perm {
unsigned short cuid; /* creator user id */
unsigned short cgid; /* creator group id */
unsigned short uid; /* user id */
unsigned short gid; /* group id */
unsigned short mode; /* r/w permission */
uid_t cuid; /* creator user id */
gid_t cgid; /* creator group id */
uid_t uid; /* user id */
gid_t gid; /* group id */
mode_t mode; /* r/w permission */
unsigned short seq; /* sequence # (to generate unique ipcid) */
key_t key; /* user specified msg/sem/shm key */
};

View File

@ -148,12 +148,9 @@ struct semid_ds {
struct sem *sem_base; /* pointer to first semaphore in set */
u_short sem_nsems; /* number of sems in set */
time_t sem_otime; /* last operation time */
long sem_pad1; /* SVABI/386 says I need this here */
time_t sem_ctime; /* last change time */
/* Times measured in secs since */
/* 00:00:00 GMT, Jan. 1, 1970 */
long sem_pad2; /* SVABI/386 says I need this here */
long sem_pad3[4]; /* SVABI/386 says I need this here */
};
.Ed
.Sh RETURN VALUES

View File

@ -100,14 +100,13 @@ structure is defined as follows:
.Bd -literal
struct shmid_ds {
struct ipc_perm shm_perm; /* operation permission structure */
int shm_segsz; /* size of segment in bytes */
size_t shm_segsz; /* size of segment in bytes */
pid_t shm_lpid; /* process ID of last shared memory op */
pid_t shm_cpid; /* process ID of creator */
short shm_nattch; /* number of current attaches */
int shm_nattch; /* number of current attaches */
time_t shm_atime; /* time of last shmat() */
time_t shm_dtime; /* time of last shmdt() */
time_t shm_ctime; /* time of last change by shmctl() */
void *shm_internal; /* sysv stupidity */
};
.Ed
.Sh RETURN VALUES
@ -133,16 +132,6 @@ the shared memory segment's owner or creator.
Permission denied due to mismatch between operation and mode of
shared memory segment.
.El
.Sh "BUGS"
The segment size has size_t type.
The shm_segsz member of the
.Vt shmid_ds
structure has type int, which is too short to represent the full range
of values for a segment size.
If shared memory limits are raised to allow segments with size > 2 GB
to be created, be aware that IPC_STAT call may return a truncated value
for shm_segsz.
.El
.Sh "SEE ALSO"
.Xr shmat 2 ,
.Xr shmdt 2 ,