/* Write an entry to the given stream.
This must know the format of the group file. */
int
putsgent (const struct sgrp *g, FILE *stream)
{
int errors = 0;
if (g->sg_namp == NULL || !__nss_valid_field (g->sg_namp)
|| !__nss_valid_field (g->sg_passwd)
|| !__nss_valid_list_field (g->sg_adm)
|| !__nss_valid_list_field (g->sg_mem))
{
__set_errno (EINVAL);
return -1;
}
_IO_flockfile (stream);
if (fprintf (stream, "%s:%s:", g->sg_namp, _S (g->sg_passwd)) < 0)
++errors;
bool first = true;
char **sp = g->sg_adm;
if (sp != NULL)
while (*sp != NULL)
{
if (fprintf (stream, "%s%s", first ? "" : ",", *sp++) < 0)
{
++errors;
break;
}
first = false;
}
if (putc_unlocked (':', stream) == EOF)
++errors;
first = true;
sp = g->sg_mem;
if (sp != NULL)
while (*sp != NULL)
{
if (fprintf (stream, "%s%s", first ? "" : ",", *sp++) < 0)
{
++errors;
break;
}
first = false;
}
if (putc_unlocked ('\n', stream) == EOF)
++errors;
_IO_funlockfile (stream);
return errors ? -1 : 0;
}
/* Write an entry to the given stream.
This must know the format of the group file. */
int
putgrent (const struct group *gr, FILE *stream)
{
int retval;
if (__glibc_unlikely (gr == NULL) || __glibc_unlikely (stream == NULL)
|| gr->gr_name == NULL || !__nss_valid_field (gr->gr_name)
|| !__nss_valid_field (gr->gr_passwd)
|| !__nss_valid_list_field (gr->gr_mem))
{
__set_errno (EINVAL);
return -1;
}
flockfile (stream);
if (gr->gr_name[0] == '+' || gr->gr_name[0] == '-')
retval = fprintf (stream, "%s:%s::",
gr->gr_name, _S (gr->gr_passwd));
else
retval = fprintf (stream, "%s:%s:%lu:",
gr->gr_name, _S (gr->gr_passwd),
(unsigned long int) gr->gr_gid);
if (__builtin_expect (retval, 0) < 0)
{
funlockfile (stream);
return -1;
}
if (gr->gr_mem != NULL)
{
for (size_t i = 0; gr->gr_mem[i] != NULL; i++)
if (fprintf (stream, i == 0 ? "%s" : ",%s", gr->gr_mem[i]) < 0)
{
/* What else can we do? */
funlockfile (stream);
return -1;
}
}
retval = fputc_unlocked ('\n', stream);
funlockfile (stream);
return retval < 0 ? -1 : 0;
}
/* Write an entry to the given stream. This must know the format of
the password file. If the input contains invalid characters,
return EINVAL, or replace them with spaces (if they are contained
in the GECOS field). */
int
putpwent (const struct passwd *p, FILE *stream)
{
if (p == NULL || stream == NULL
|| p->pw_name == NULL || !__nss_valid_field (p->pw_name)
|| !__nss_valid_field (p->pw_passwd)
|| !__nss_valid_field (p->pw_dir)
|| !__nss_valid_field (p->pw_shell))
{
__set_errno (EINVAL);
return -1;
}
int ret;
char *gecos_alloc;
const char *gecos = __nss_rewrite_field (p->pw_gecos, &gecos_alloc);
if (gecos == NULL)
return -1;
if (p->pw_name[0] == '+' || p->pw_name[0] == '-')
ret = fprintf (stream, "%s:%s:::%s:%s:%s\n",
p->pw_name, _S (p->pw_passwd),
gecos, _S (p->pw_dir), _S (p->pw_shell));
else
ret = fprintf (stream, "%s:%s:%lu:%lu:%s:%s:%s\n",
p->pw_name, _S (p->pw_passwd),
(unsigned long int) p->pw_uid,
(unsigned long int) p->pw_gid,
gecos, _S (p->pw_dir), _S (p->pw_shell));
free (gecos_alloc);
if (ret >= 0)
ret = 0;
return ret;
}
