1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" References consulted:
.\" Linux libc source code
.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\" 386BSD man pages
.\" Modified Sat Jul 24 19:29:54 1993 by Rik Faith (faith@cs.unc.edu)
.\" Translated into Spanish Mon Jan 26 1998 by Gerardo Aburruzaga
.\" Garca <gerardo.aburruzaga@uca.es>
.TH GETGRENT 3 "26 Enero 1998" "GNU" "Manual del Programador de Linux"
.SH NOMBRE
getgrent, setgrent, endgrent \- obtiene una entrada del fichero de grupos
.SH SINOPSIS
.nf
.B #include <grp.h>
.B #include <sys/types.h>
.sp
.B struct group *getgrent(void);
.sp
.B void setgrent(void);
.sp
.B void endgrent(void);
.fi
.SH DESCRIPCIN
La funcin
.B getgrent()
devuelve un puntero a una estructura que contiene la
informacin de grupo de \fI/etc/group\fP. La primera vez que se la
llama devuelve la primera entrada; a partir de ah devuelve las
entradas sucesivas.
.PP
La funcin \fBsetgrent()\fP rebobina el apuntador de posicin del
fichero al principio del fichero \fI/etc/group\fP.
.PP
La funcin \fBendgrent()\fP cierra el fichero \fI/etc/group\fP.
.PP
La estructura \fIgroup\fP se define en \fI<grp.h>\fP como sigue:
.sp
.RS
.nf
.ta 8n 16n 32n
struct group {
char *gr_name; /* nombre del grupo */
char *gr_passwd; /* contrasea del grupo */
gid_t gr_gid; /* id. del grupo */
char **gr_mem; /* miembros del grupo */
};
.ta
.fi
.RE
.SH "VALOR DEVUELTO"
La funcin \fBgetgrent()\fP devuelve la direccin de la estructura con
informacin del grupo, o NULL si no hay ms entradas o ha ocurrido un error.
.SH ERRORES
.TP
.B ENOMEM
No hay bastante memoria como para alojar la estructura con la
informacin del grupo.
.SH FICHEROS
.TP
.I /etc/group
fichero con la base de datos de grupos
.SH "CONFORME A"
SVID 3, BSD 4.3
.SH "VASE TAMBIN"
.BR fgetgrent "(3), " getgrnam "(3), " getgrgid (3)
|
