Make the structure definitions in the man pages match the real code, and
remove no longer valid caution. Approved by: re (kensmith)
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parent
7850fa71f5
commit
8c8484d103
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=195172
@ -71,12 +71,8 @@ struct msqid_ds {
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pid_t msg_lspid; /* pid of last msgsnd() */
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pid_t msg_lrpid; /* pid of last msgrcv() */
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time_t msg_stime; /* time of last msgsnd() */
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long msg_pad1;
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time_t msg_rtime; /* time of last msgrcv() */
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long msg_pad2;
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time_t msg_ctime; /* time of last msgctl() */
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long msg_pad3;
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long msg_pad4[4];
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};
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.Ed
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.Pp
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@ -89,11 +85,11 @@ structure is defined in
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and looks like this:
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.Bd -literal
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struct ipc_perm {
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unsigned short cuid; /* creator user id */
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unsigned short cgid; /* creator group id */
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unsigned short uid; /* user id */
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unsigned short gid; /* group id */
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unsigned short mode; /* r/w permission */
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uid_t cuid; /* creator user id */
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gid_t cgid; /* creator group id */
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uid_t uid; /* user id */
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gid_t gid; /* group id */
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mode_t mode; /* r/w permission */
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unsigned short seq; /* sequence # (to generate unique ipcid) */
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key_t key; /* user specified msg/sem/shm key */
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};
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@ -148,12 +148,9 @@ struct semid_ds {
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struct sem *sem_base; /* pointer to first semaphore in set */
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u_short sem_nsems; /* number of sems in set */
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time_t sem_otime; /* last operation time */
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long sem_pad1; /* SVABI/386 says I need this here */
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time_t sem_ctime; /* last change time */
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/* Times measured in secs since */
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/* 00:00:00 GMT, Jan. 1, 1970 */
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long sem_pad2; /* SVABI/386 says I need this here */
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long sem_pad3[4]; /* SVABI/386 says I need this here */
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};
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.Ed
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.Sh RETURN VALUES
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@ -100,14 +100,13 @@ structure is defined as follows:
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.Bd -literal
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struct shmid_ds {
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struct ipc_perm shm_perm; /* operation permission structure */
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int shm_segsz; /* size of segment in bytes */
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size_t shm_segsz; /* size of segment in bytes */
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pid_t shm_lpid; /* process ID of last shared memory op */
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pid_t shm_cpid; /* process ID of creator */
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short shm_nattch; /* number of current attaches */
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int shm_nattch; /* number of current attaches */
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time_t shm_atime; /* time of last shmat() */
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time_t shm_dtime; /* time of last shmdt() */
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time_t shm_ctime; /* time of last change by shmctl() */
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void *shm_internal; /* sysv stupidity */
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};
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.Ed
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.Sh RETURN VALUES
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@ -133,16 +132,6 @@ the shared memory segment's owner or creator.
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Permission denied due to mismatch between operation and mode of
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shared memory segment.
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.El
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.Sh "BUGS"
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The segment size has size_t type.
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The shm_segsz member of the
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.Vt shmid_ds
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structure has type int, which is too short to represent the full range
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of values for a segment size.
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If shared memory limits are raised to allow segments with size > 2 GB
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to be created, be aware that IPC_STAT call may return a truncated value
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for shm_segsz.
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.El
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.Sh "SEE ALSO"
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.Xr shmat 2 ,
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.Xr shmdt 2 ,
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