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| author | Gregory Nutt <gnutt@nuttx.org> | 2014-09-23 08:46:31 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2014-09-23 08:46:31 -0600 |
| commit | 0ab7598b044d6520db91211abe62a75c51a9ea81 (patch) | |
| tree | a3f5ab01f1b662b2be927c02fe64a139d6fcf380 /nuttx/Documentation/NuttxUserGuide.html | |
| parent | 0f3f2d5095043776fc32c2f802bbbf2ed3865533 (diff) | |
| download | nuttx-0ab7598b044d6520db91211abe62a75c51a9ea81.tar.gz nuttx-0ab7598b044d6520db91211abe62a75c51a9ea81.tar.bz2 nuttx-0ab7598b044d6520db91211abe62a75c51a9ea81.zip | |
Add shared memory initializatin logic
Diffstat (limited to 'nuttx/Documentation/NuttxUserGuide.html')
| -rw-r--r-- | nuttx/Documentation/NuttxUserGuide.html | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/nuttx/Documentation/NuttxUserGuide.html b/nuttx/Documentation/NuttxUserGuide.html index 480c7daf7..ee5d45ae1 100644 --- a/nuttx/Documentation/NuttxUserGuide.html +++ b/nuttx/Documentation/NuttxUserGuide.html @@ -9087,11 +9087,6 @@ int shmget(key_t key, size_t size, int shmflg); <ul> <li> <p> - The values of <code>shm_perm.cuid</code>, <code>shm_perm.uid</code>, <code>shm_perm.cgid</code>, and <code>shm_perm.gid</code> are set equal to the effective user ID and effective group ID, respectively, of the calling process. - </p> - </li> - <li> - <p> The low-order nine bits of <code>shm_perm.mode</code> are set equal to the low-order nine bits of <code>shmflg</code>. </p> </li> @@ -9162,6 +9157,17 @@ int shmget(key_t key, size_t size, int shmflg); A shared memory identifier is to be created, but the system-imposed limit on the maximum number of allowed shared memory identifiers system-wide would be exceeded. </li> </ul> +<p> + <b>POSIX Deviations</b> +<p> +<ul> + <li> + <p> + The values of <code>shm_perm.cuid</code>, <code>shm_perm.uid</code>, <code>shm_perm.cgid</code>, and <code>shm_perm.gid</code> should be set equal to the effective user ID and effective group ID, respectively, of the calling process. + The NuttX <code>ipc_perm</code> structure, however, does not support these fields because user and group IDs are not yet supported by NuttX. + </p> + </li> +</ul> <h3><a name="shmat">2.12.2 <code>shmat</code></a></h3> <p> |