putgrent(3) Library Functions Manual putgrent(3)
NAME
putgrent - write a group database entry to a file
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <grp.h>
int putgrent(const struct group *restrict grp, FILE *restrict stream);
DESCRIPTION
The putgrent() function is the counterpart for fgetgrent(3). The func-
tion writes the content of the provided struct group into the stream.
The list of group members must be NULL-terminated or NULL-initialized.
The struct group is defined 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 function returns zero on success, and a nonzero value on error.
ATTRIBUTES
For an explanation of the terms used in this section, see at-
tributes(7).
┌────────────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├────────────────────────────────────────────┼───────────────┼─────────┤
│putgrent() │ Thread safety │ MT-Safe │
└────────────────────────────────────────────┴───────────────┴─────────┘
STANDARDS
This function is a GNU extension.
SEE ALSO
fgetgrent(3), getgrent(3), group(5)
Linux man-pages 6.03 2022-12-15 putgrent(3)
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