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fgetgrent(3) [centos man page]

FGETGRENT(3)						     Linux Programmer's Manual						      FGETGRENT(3)

NAME
fgetgrent - get group file entry SYNOPSIS
#include <stdio.h> #include <sys/types.h> #include <grp.h> struct group *fgetgrent(FILE *stream); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): fgetgrent(): _SVID_SOURCE DESCRIPTION
The fgetgrent() function returns a pointer to a structure containing the group information from the file referred to by stream. The first time it is called it returns the first entry; thereafter, it returns successive entries. The file referred to by stream must have the same format as /etc/group (see group(5)). The group structure is defined in <grp.h> as follows: struct group { char *gr_name; /* group name */ char *gr_passwd; /* group password */ gid_t gr_gid; /* group ID */ char **gr_mem; /* group members */ }; RETURN VALUE
The fgetgrent() function returns a pointer to a group structure, or NULL if there are no more entries or an error occurs. In the event of an error, errno is set to indicate the cause. ERRORS
ENOMEM Insufficient memory to allocate group structure. CONFORMING TO
SVr4. SEE ALSO
endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3), getgrnam(3), putgrent(3), setgrent(3), group(5) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2013-04-19 FGETGRENT(3)

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FGETGRENT(3)						     Linux Programmer's Manual						      FGETGRENT(3)

NAME
fgetgrent - get group file entry SYNOPSIS
#include <stdio.h> #include <sys/types.h> #include <grp.h> struct group *fgetgrent(FILE *stream); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): fgetgrent(): Since glibc 2.19: _DEFAULT_SOURCE Glibc 2.19 and earlier: _SVID_SOURCE DESCRIPTION
The fgetgrent() function returns a pointer to a structure containing the group information from the file referred to by stream. The first time it is called it returns the first entry; thereafter, it returns successive entries. The file referred to by stream must have the same format as /etc/group (see group(5)). The group structure is defined in <grp.h> as follows: struct group { char *gr_name; /* group name */ char *gr_passwd; /* group password */ gid_t gr_gid; /* group ID */ char **gr_mem; /* NULL-terminated array of pointers to names of group members */ }; RETURN VALUE
The fgetgrent() function returns a pointer to a group structure, or NULL if there are no more entries or an error occurs. In the event of an error, errno is set to indicate the cause. ERRORS
ENOMEM Insufficient memory to allocate group structure. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +------------+---------------+--------------------------+ |Interface | Attribute | Value | +------------+---------------+--------------------------+ |fgetgrent() | Thread safety | MT-Unsafe race:fgetgrent | +------------+---------------+--------------------------+ CONFORMING TO
SVr4. SEE ALSO
endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3), getgrnam(3), putgrent(3), setgrent(3), group(5) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. GNU
2017-09-15 FGETGRENT(3)
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