View Source: EACCES - Waikato Linux Users Group

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!!!Permission Denied

This is often confused with [EPERM], to quote SUSv3:

;:''Permission denied. An attempt was made to access a file in a way forbidden by its file access permissions.''

Examples include:
* trying to lower a process's nice(1) value (ie make it a higher priority process) when you are not the superuser. (nice uses the setpriority(2) call, not the nice(2) call which returns EPERM).
* trying to unlink(2) (delete) a file when you do not have write access to the file or the directory, or open a file for reading when you do not have read access.
* doing something [SELinux] prohibits.

In general, EACCES seems morely to be used for file permission conflicts, while EPERM seems more likely to be used for process-related permission conflicts. But you can see that even system calls use them differently.

37 pages link to EACCES:

Last edited on Friday, November 4, 2005 2:45:31 pm by IanMcDonald

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