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umask.2freebsd
Langue: en
Version: 266123 (debian - 07/07/09)
Section: 2 (Appels système)
BSD mandoc
NAME
umask - set file creation mode maskLIBRARY
Lb libcSYNOPSIS
In sys/stat.h Ft mode_t Fn umask mode_t numaskDESCRIPTION
The Fn umask routine sets the process's file mode creation mask to Fa numask and returns the previous value of the mask. The 9 low-order access permission bits of Fa numask are used by system calls, including open(2), mkdir(2), and mkfifo(2), to turn off corresponding bits requested in file mode. (See chmod(2)). This clearing allows each user to restrict the default access to his files.The default mask value is S_IWGRP|S_IWOTH (022, write access for the owner only). Child processes inherit the mask of the calling process.
RETURN VALUES
The previous value of the file mode mask is returned by the call.ERRORS
The Fn umask system call is always successful.SEE ALSO
chmod(2), mkfifo(2), mknod(2), open(2)STANDARDS
The Fn umask system call is expected to conform to St -p1003.1-90 .HISTORY
The Fn umask function appeared in AT&T System v7 .Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre