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umask(2) [netbsd man page]

UMASK(2)						      BSD System Calls Manual							  UMASK(2)

NAME
umask -- set file creation mode mask LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <sys/stat.h> mode_t umask(mode_t numask); DESCRIPTION
The umask() routine sets the process's file mode creation mask to numask and returns the previous value of the mask. The 9 low-order access permission bits of numask are used by system calls, including open(2), mkdir(2), mkfifo(2) and mknod(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 umask() function is always successful. SEE ALSO
chmod(2), mkdir(2), mkfifo(2), mknod(2), open(2) STANDARDS
The umask() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1''). BSD
June 4, 1993 BSD

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umask(2)							   System Calls 							  umask(2)

NAME
umask - set and get file creation mask SYNOPSIS
#include <sys/types.h> #include <sys/stat.h> mode_t umask(mode_t cmask); DESCRIPTION
The umask() function sets the process's file mode creation mask to cmask and returns the previous value of the mask. Only the access per- mission bits of cmask and the file mode creation mask are used. The mask is inherited by child processes. See Intro(2) for more information on masks. RETURN VALUES
The previous value of the file mode creation mask is returned. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Async-Signal-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mkdir(1), sh(1), Intro(2), chmod(2), creat(2), mknod(2), open(2), stat.h(3HEAD), attributes(5), standards(5) SunOS 5.11 28 Dec 1996 umask(2)
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