/* 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; }