diff options
author | Richard Maw <richard.maw@codethink.co.uk> | 2012-01-17 14:43:55 +0000 |
---|---|---|
committer | Richard Maw <richard.maw@codethink.co.uk> | 2012-01-17 14:43:55 +0000 |
commit | 2de9abc5c9d40b3c716307d67d16146f823fd554 (patch) | |
tree | 6979db67934ddc8b564150b465846a383b428ff8 /gnulib/lib/getugroups.c | |
parent | 33cc1c6fda6e72a7bae1401e9b2cec495a4d3ff1 (diff) | |
download | patch-baserock/bootstrap.tar.gz |
add the output of bootstrapbaserock/bootstrap-pass2baserock/bootstrap
Diffstat (limited to 'gnulib/lib/getugroups.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/lib/getugroups.c | 125 |
2 files changed, 125 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/lib/getugroups.c b/gnulib/lib/getugroups.c new file mode 100644 index 0000000..dc8089b --- /dev/null +++ b/gnulib/lib/getugroups.c @@ -0,0 +1,125 @@ +/* getugroups.c -- return a list of the groups a user is in + + Copyright (C) 1990-1991, 1998-2000, 2003-2011 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* Written by David MacKenzie. */ + +#include <config.h> + +#include "getugroups.h" + +#include <errno.h> +#include <limits.h> +#include <stdio.h> /* grp.h on alpha OSF1 V2.0 uses "FILE *". */ +#include <string.h> +#include <unistd.h> + +#if !HAVE_GRP_H + +/* Mingw lacks all things related to group management. The best we + can do is fail with ENOSYS. */ + +int +getugroups (int maxcount _GL_UNUSED, + gid_t *grouplist _GL_UNUSED, + char const *username _GL_UNUSED, + gid_t gid _GL_UNUSED) +{ + errno = ENOSYS; + return -1; +} + +#else /* HAVE_GRP_H */ +# include <grp.h> + +# define STREQ(a, b) (strcmp (a, b) == 0) + +/* Like `getgroups', but for user USERNAME instead of for the current + process. Store at most MAXCOUNT group IDs in the GROUPLIST array. + If GID is not -1, store it first (if possible). GID should be the + group ID (pw_gid) obtained from getpwuid, in case USERNAME is not + listed in /etc/groups. Upon failure, set errno and return -1. + Otherwise, return the number of IDs we've written into GROUPLIST. */ + +int +getugroups (int maxcount, gid_t *grouplist, char const *username, + gid_t gid) +{ + int count = 0; + + if (gid != (gid_t) -1) + { + if (maxcount != 0) + grouplist[count] = gid; + ++count; + } + + setgrent (); + while (1) + { + char **cp; + struct group *grp; + + errno = 0; + grp = getgrent (); + if (grp == NULL) + break; + + for (cp = grp->gr_mem; *cp; ++cp) + { + int n; + + if ( ! STREQ (username, *cp)) + continue; + + /* See if this group number is already on the list. */ + for (n = 0; n < count; ++n) + if (grouplist && grouplist[n] == grp->gr_gid) + break; + + /* If it's a new group number, then try to add it to the list. */ + if (n == count) + { + if (maxcount != 0) + { + if (count >= maxcount) + goto done; + grouplist[count] = grp->gr_gid; + } + if (count == INT_MAX) + { + errno = EOVERFLOW; + goto done; + } + count++; + } + } + } + + if (errno != 0) + count = -1; + + done: + { + int saved_errno = errno; + endgrent (); + errno = saved_errno; + } + + return count; +} + +#endif /* HAVE_GRP_H */ |