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- 4. 7. SELinux Contexts – Labeling Files | SELinux Users and . . . - Red Hat
On systems running SELinux, all processes and files are labeled in a way that represents security-relevant information This information is called the SELinux context For files, this is viewed using the ls -Z command: In this example, SELinux provides a user (unconfined_u), a role (object_r), a type (user_home_t), and a level (s0)
- How to label a newly created file with system_u?
What should I use to change the label from unconfined_u to system_u on the file freetds conf new? A "temporary" label change is done via the chcon command: A permanent change would be done via the semanage command This will add (or modify) a line in etc selinux targeted contexts files file_contexts local which can then be applied with restorecon
- SELinux security contexts: correcting SELinux labels on a file system . . .
Inappropriate SELinux security labels can result in errors such as NGINX 403 Forbidden The fact that SELinux could be the culprit of a 403 error is usually less than obvious SELinux logs denials to: One of the simplest ways to poke around SELinux involves using the grep utility with audit2why, for example like this:
- android - SELinux: Context u:object_r:usb-update_exec:s0 is not valid . . .
Your file_context defines a context for system bin usb-update and not system bin usb-update sh There should not be a whitespace in u:object_r: usb-update_exec:s0 nor u:r: usb-update:s0 You probably don't need the seclabel property in your init rc
- SELinux relabel operation prints filespec_add: conflicting . . .
# matchpathcon system_u:object_r:root_t:s0 # ls -Zd dr-xr-xr-x root root system_u:object_r:admin_home_t:s0 Running sbin fixfiles manually to relabel the system prints the filespec_add message shown below
- 5. 7. SELinux Contexts - Labeling Files - Fedora People
On systems running SELinux, all processes and files are labeled with a label that contains security-relevant information This information is called the SELinux context For files, this is viewed using the ls -Z command: In this example, SELinux provides a user (unconfined_u), a role (object_r), a type (user_home_t), and a level (s0)
- SELinux cheatsheet - WhiteWinterWolf. com
A transition rule can force the transition to a different domain For instance a process with the domain system_u:system_r:initrc_t executing a file with the domain httpd_exec_t results in child process with the domain set to system_u:system_r:httpd_t sesearch can be used to investigate such rules:
- What does system_u means when assigned to a file?
if there is a file assigned with system_u as SELinux that means only the user mapped to system_u unconfined_u gets to access the file? That depends on the security model, but generally the user attribute in a security context is only used to glue the remainder of a security context to Linux user group identities
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