mirror of https://github.com/mkerrisk/man-pages
svipc.7: Minor changes
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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.\"
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.\"
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.\" FIXME There is now duplication of some of the information
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.\" FIXME There is now duplication of some of the information
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.\" below in semctl.2, msgctl.2, and shmctl.2 -- MTK, Nov 04
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.\" below in semctl.2, msgctl.2, and shmctl.2 -- MTK, Nov 04
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.TH SVIPC 7 1993-11-01 "Linux" "Linux Programmer's Manual"
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.TH SVIPC 7 2009-01-26 "Linux" "Linux Programmer's Manual"
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.SH NAME
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.SH NAME
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svipc \- System V interprocess communication mechanisms
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svipc \- System V interprocess communication mechanisms
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.SH SYNOPSIS
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.SH SYNOPSIS
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.fi
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.fi
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.SH DESCRIPTION
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.SH DESCRIPTION
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This manual page refers to the Linux implementation of the System V
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This manual page refers to the Linux implementation of the System V
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interprocess communication mechanisms:
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interprocess communication (IPC) mechanisms:
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message queues, semaphore sets, and shared memory segments.
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message queues, semaphore sets, and shared memory segments.
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In the following, the word
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In the following, the word
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.I resource
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.I resource
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For each resource, the system uses a common structure of type
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For each resource, the system uses a common structure of type
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.I "struct ipc_perm"
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.I "struct ipc_perm"
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to store information needed in determining permissions to perform an
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to store information needed in determining permissions to perform an
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ipc operation.
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IPC operation.
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The
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The
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.I ipc_perm
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.I ipc_perm
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structure, defined by the
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structure, defined by the
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member of the
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member of the
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.I ipc_perm
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.I ipc_perm
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structure defines, with its lower 9 bits, the access permissions to the
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structure defines, with its lower 9 bits, the access permissions to the
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resource for a process executing an ipc system call.
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resource for a process executing an IPC system call.
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The permissions are interpreted as follows:
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The permissions are interpreted as follows:
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.sp
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.sp
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.nf
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.nf
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