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Rewind to the start of the group database file
#include <grp.h>
int setgrent( void );
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The setgrent() function rewinds to the start of the group
name database file. It's provided for programs that make multiple lookups in
the group database (using the
getgrgid() and
getgrnam()
calls) to avoid the default opening and closing of the group database for
each access.
- 0
- Success.
- -1
- An error occurred.
The setgrent() function uses fopen().
As a result,
errno
can be set to an error for the
fopen() call.
POSIX 1003.1 XSI
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
endgrent(),
getgrent()
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