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BSD 2.11 - man page for getmode (bsd section 3)

SETMODE(3)				       Library Functions Manual 				   SETMODE(3)

NAME
getmode, setmode - modify mode bits
SYNOPSIS
#include <sys/types.h> mode_t getmode(set, mode) void *set; mode_t mode void * setmode(mode_str) char *mode_str;
DESCRIPTION
The getmode function returns a copy of the file permission bits mode as altered by the values pointed to by set. While only the mode bits are altered, other parts of the file mode may be examined. The setmode function takes an absolute (octal) or symbolic value, as described in chmod(1), as an argument and returns a pointer to mode values to be supplied to getmode. Because some of the symbolic values are relative to the file creation mask, setmode may call umask(2). If this occurs, the file creation mask will be restored before setmode returns. If the calling program changes the value of its file creation mask after calling set- mode, setmode must be called again if getmode is to modify future file modes correctly. If the mode passed to setmode is invalid, setmode returns NULL.
ERRORS
The setmode function may fail and set errno for any of the errors specified for the library routine malloc(3).
SEE ALSO
chmod(1), stat(2), umask(2), malloc(3)
HISTORY
The getmode and setmode functions first appeared in 4.4BSD. 4.4 Berkeley Distribution February 20, 1996 SETMODE(3)


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