Patch 1645 : IRIX 6.2 & 6.3 POSIX header file updates : [IRIX 6.3 6.2]
INDEX
RELATIONS
RELEASE NOTES
1. Patch SG0001645 Release Note This release note describes patch SG0001645 to IRIX 6.2 and IRIX 6.3.1.1 Supported Hardware Platforms This patch contains bug fixes for all platforms running IRIX 6.2 and IRIX 6.3.1.2 Supported Software Platforms This patch contains bug fixes for the IRIX 6.2 and IRIX 6.3 development environment. It replaces patches 1367 and 1403.1.3 Bugs Fixed by Patch SG0001645 This patch contains fixes for the following bugs in IRIX 6.2 and IRIX 6.3. Bug numbers from Silicon Graphics bug tracking system are included for reference. o Bug 501560: POSIX semaphores are not compatible across MIPS ABIs and across the various releases of IRIX (see Chapter 2 of these release notes for details). o Bug 440759: Update _POSIX_VERSION to conform to POSIX 1003.1c.1.4 Subsystems Included in Patch SG0001645 This patch release includes these subsystems: o patchSG0001645.eoe_hdr.lib1.5 Installation Instructions Because you want to install only the patches for problems you have encountered, patch software is not installed by default. After reading the descriptions of the bugs fixed in this patch (see Section 1.3), determine the patches that meet your specific needs. If, after reading Sections 1.1 and 1.2 of these release notes, you are unsure whether your hardware and software meet the requirements for installing a particular patch, run inst. The inst program does not allow you to install patches that are incompatible with your hardware or software. Patch software is installed like any other Silicon Graphics software product. Follow the instructions in your Software Installation Administrator's Guide to bring up the miniroot form of the software installation tools. Follow these steps to select a patch for installation: 1. At the Inst> prompt, type install patchSGxxxxxxx where xxxxxxx is the patch number. 2. Initiate the installation sequence. Type Inst> go 3. You may find that two patches have been marked as incompatible. (The installation tools reject an installation request if an incompatibility is detected.) If this occurs, you must deselect one of the patches. Inst> keep patchSGxxxxxxx where xxxxxxx is the patch number. 4. After completing the installation process, exit the inst program by typing Inst> quit1.6 Patch Removal Instructions To remove a patch, use the versions remove command as you would for any other software subsystem. The removal process reinstates the original version of software unless you have specifically removed the patch history from your system. versions remove patchSGxxxxxxx where xxxxxxx is the patch number. To keep a patch but increase your disk space, use the versions removehist command to remove the patch history. versions removehist patchSGxxxxxxx where xxxxxxx is the patch number.1.7 Known Problems 2. Patch_SG0001645_POSIX_Semaphore_Note This release note describes POSIX semaphore modifications in patch SG0001645 to IRIX 6.2 and IRIX 6.3. 2.1 Data_Structure_Expansion The /usr/include/semaphore.h header file included in this patch extends the size of the sem_t data structure type. This expansion is necessary to ensure cross MIPS ABI compatibility, and to allow room for new features in subsequent releases of IRIX. 2.2 What_Applications_Are_Affected? The new semaphore.h header file only affects POSIX unnamed semaphores; POSIX named semaphores and other classes of semaphore are unchanged. The remainder of this section explains the impact of this patch on POSIX unnamed semaphores. Existing binaries that depend on the size of a sem_t cannot be mixed with binaries compiled using this patch. Therefore, it is recommended that all applications using POSIX unnamed semaphores be recompiled using the new version of semaphore.h supplied by this patch. The new version will be shipped with all future releases of IRIX. Applications that cannot be recompiled with the new version of semaphore.h will continue to execute on IRIX, but compatibility is limited in the following manner: o POSIX unnamed semaphores or data containing them may not be shared between modules compiled with the original version of semaphore.h and modules compiled with the new semaphore.h (supplied by this patch and in future IRIX releases). o POSIX unnamed semaphores will remain incompatible across MIPS ABIs. INST SUBSYSTEM REQUIREMENTS No Requirements Information Available. INST SUBSYSTEM CHECKSUMS These checksums help to provide a 'signature' for the patch inst image which can be used to authenticate other inst images. You can obtain this kind of output by running sum -r on the image (from the command line): 37746 1 patchSG0001645 46311 50 patchSG0001645.eoe_hdr 64809 3 patchSG0001645.idb INST SUBSYSTEM FILE LISTINGS The following lists the files which get installed from each subsystem in the patch:
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Document Id: 20021117064013-IRIXPatch-1001
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