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attr.7: srcfix: wrap long lines and wrap at end of sentences 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-04-22 08:50:55 +02:00
parent 5d993ac57d
commit 933e467539
1 changed files with 16 additions and 10 deletions
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man7/attr.7
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@ -76,11 +76,11 @@ Currently the
.IR trusted ,
and
.IR user
extended attribute classes are defined as described below. Additional
classes may be added in the future.
extended attribute classes are defined as described below.
Additional classes may be added in the future.
.SS Extended security attributes
The security attribute namespace is used by kernel security modules,
such as Security Enhanced Linux.
such as Security Enhanced Linux.
Read and write access permissions to security attributes depend on the
policy implemented for each security attribute by the security module.
When no security module is loaded, all processes have read access to
@ -88,7 +88,8 @@ extended security attributes, and write access is limited to processes
that have the CAP_SYS_ADMIN capability.
.SS Extended system attributes
Extended system attributes are used by the kernel to store system
objects such as Access Control Lists and Capabilities. Read and write
objects such as Access Control Lists and Capabilities.
Read and write
access permissions to system attributes depend on the policy implemented
for each system attribute implemented by filesystems in the kernel.
.SS Trusted extended attributes
@ -101,19 +102,24 @@ to which ordinary processes should not have access.
.SS Extended user attributes
Extended user attributes may be assigned to files and directories for
storing arbitrary additional information such as the mime type,
character set or encoding of a file. The access permissions for user
character set or encoding of a file.
The access permissions for user
attributes are defined by the file permission bits.
.PP
The file permission bits of regular files and directories are
interpreted differently from the file permission bits of special files
and symbolic links. For regular files and directories the file
and symbolic links.
For regular files and directories the file
permission bits define access to the file's contents, while for device special
files they define access to the device described by the special file.
The file permissions of symbolic links are not used in access
checks. These differences would allow users to consume filesystem resources in
a way not controllable by disk quotas for group or world writable special files and directories.
The file permissions of symbolic links are not used in access checks.
These differences would allow users to consume filesystem resources in
a way not controllable by disk quotas for group or world writable
special files and directories.
.PP
For this reason, extended user attributes are only allowed for regular files and directories, and access to extended user attributes is restricted to the
For this reason,
extended user attributes are only allowed for regular files and directories,
and access to extended user attributes is restricted to the
owner and to users with appropriate capabilities for directories with the
sticky bit set (see the
.BR chmod (1)