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author | bde <bde@FreeBSD.org> | 1997-07-03 03:28:27 +0000 |
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committer | bde <bde@FreeBSD.org> | 1997-07-03 03:28:27 +0000 |
commit | c800b77e17a9db61b5cfedb8ada17ba33ba97d40 (patch) | |
tree | 90ddf44d2360a352ad20e3859f2a1e7fb8011ca1 /lib/libc/compat-43 | |
parent | 73643318c3a441ade17ebffbe29ea00889ccbad3 (diff) | |
parent | e2f0a0f35c8c3ecbae359c67f0d5b3aac5ce43dc (diff) | |
download | FreeBSD-src-c800b77e17a9db61b5cfedb8ada17ba33ba97d40.zip FreeBSD-src-c800b77e17a9db61b5cfedb8ada17ba33ba97d40.tar.gz |
This commit was generated by cvs2svn to compensate for changes in r27180,
which included commits to RCS files with non-trunk default branches.
Diffstat (limited to 'lib/libc/compat-43')
-rw-r--r-- | lib/libc/compat-43/setregid.2 | 93 | ||||
-rw-r--r-- | lib/libc/compat-43/setregid.c | 62 | ||||
-rw-r--r-- | lib/libc/compat-43/setreuid.2 | 91 | ||||
-rw-r--r-- | lib/libc/compat-43/setreuid.c | 62 |
4 files changed, 308 insertions, 0 deletions
diff --git a/lib/libc/compat-43/setregid.2 b/lib/libc/compat-43/setregid.2 new file mode 100644 index 0000000..bf2624da --- /dev/null +++ b/lib/libc/compat-43/setregid.2 @@ -0,0 +1,93 @@ +.\" Copyright (c) 1980, 1991, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)setregid.2 8.2 (Berkeley) 4/16/94 +.\" +.Dd April 16, 1994 +.Dt SETREGID 2 +.Os BSD 4.2 +.Sh NAME +.Nm setregid +.Nd set real and effective group ID +.Sh SYNOPSIS +.Fd #include <unistd.h> +.Ft int +.Fn setregid "gid_t rgid" "gid_t egid" +.Sh DESCRIPTION +The real and effective group ID's of the current process +are set to the arguments. +Unprivileged users may change the real group +ID to the effective group ID and vice-versa; only the super-user may +make other changes. +.Pp +Supplying a value of -1 for either the real or effective +group ID forces the system to substitute the current +ID in place of the -1 parameter. +.Pp +The +.Fn setregid +function was intended to allow swapping +the real and effective group IDs +in set-group-ID programs to temporarily relinquish the set-group-ID value. +This function did not work correctly, +and its purpose is now better served by the use of the +.Fn setegid +function (see +.Xr setuid 2 ) . +.Pp +When setting the real and effective group IDs to the same value, +the standard +.Fn setgid +function is preferred. +.Sh RETURN VALUES +Upon successful completion, a value of 0 is returned. Otherwise, +a value of -1 is returned and +.Va errno +is set to indicate the error. +.Sh ERRORS +.Bl -tag -width [EPERM] +.It Bq Er EPERM +The current process is not the super-user and a change +other than changing the effective group-id to the real group-id +was specified. +.El +.Sh SEE ALSO +.Xr getgid 2 , +.Xr setegid 2 , +.Xr setgid 2 , +.Xr setuid 2 +.Sh HISTORY +The +.Nm +function call appeared in +.Bx 4.2 +and was dropped in +.Bx 4.4 . diff --git a/lib/libc/compat-43/setregid.c b/lib/libc/compat-43/setregid.c new file mode 100644 index 0000000..f91418b --- /dev/null +++ b/lib/libc/compat-43/setregid.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)setregid.c 8.1 (Berkeley) 6/2/93"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/types.h> +#include <errno.h> + +int +setregid(rgid, egid) + gid_t rgid, egid; +{ + static gid_t savedgid = -1; + + if (savedgid == -1) + savedgid = getegid(); + /* + * we assume that the intent here is to be able to + * get back rgid priviledge. So we make sure that + * we will be able to do so, but do not actually + * set the rgid. + */ + if (rgid != -1 && rgid != getgid() && rgid != savedgid) { + errno = EPERM; + return (-1); + } + if (egid != -1 && setegid(egid) < 0) + return (-1); + return (0); +} diff --git a/lib/libc/compat-43/setreuid.2 b/lib/libc/compat-43/setreuid.2 new file mode 100644 index 0000000..980da12 --- /dev/null +++ b/lib/libc/compat-43/setreuid.2 @@ -0,0 +1,91 @@ +.\" Copyright (c) 1980, 1991, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)setreuid.2 8.2 (Berkeley) 4/16/94 +.\" +.Dd April 16, 1994 +.Dt SETREUID 2 +.Os BSD 4 +.Sh NAME +.Nm setreuid +.Nd set real and effective user ID's +.Sh SYNOPSIS +.Fd #include <unistd.h> +.Ft int +.Fn setreuid "uid_t ruid" "uid_t euid" +.Sh DESCRIPTION +The real and effective user IDs of the +current process are set according to the arguments. +If +.Fa ruid +or +.Fa euid +is -1, the current uid is filled in by the system. +Unprivileged users may change the real user +ID to the effective user ID and vice-versa; only the super-user may +make other changes. +.Pp +The +.Fn setreuid +function has been used to swap the real and effective user IDs +in set-user-ID programs to temporarily relinquish the set-user-ID value. +This purpose is now better served by the use of the +.Fn seteuid +function (see +.Xr setuid 2 ) . +.Pp +When setting the real and effective user IDs to the same value, +the standard +.Fn setuid +function is preferred. +.Sh RETURN VALUES +Upon successful completion, a value of 0 is returned. Otherwise, +a value of -1 is returned and +.Va errno +is set to indicate the error. +.Sh ERRORS +.Bl -tag -width [EPERM] +.It Bq Er EPERM +The current process is not the super-user and a change +other than changing the effective user-id to the real user-id +was specified. +.El +.Sh SEE ALSO +.Xr getuid 2 , +.Xr seteuid 2 , +.Xr setuid 2 +.Sh HISTORY +The +.Nm +function call appeared in +.Bx 4.2 +and was dropped in +.Bx 4.4 . diff --git a/lib/libc/compat-43/setreuid.c b/lib/libc/compat-43/setreuid.c new file mode 100644 index 0000000..4031681 --- /dev/null +++ b/lib/libc/compat-43/setreuid.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)setreuid.c 8.1 (Berkeley) 6/2/93"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/types.h> +#include <errno.h> + +int +setreuid(ruid, euid) + uid_t ruid, euid; +{ + static uid_t saveduid = -1; + + if (saveduid == -1) + saveduid = geteuid(); + /* + * we assume that the intent here is to be able to + * get back ruid priviledge. So we make sure that + * we will be able to do so, but do not actually + * set the ruid. + */ + if (ruid != -1 && ruid != getuid() && ruid != saveduid) { + errno = EPERM; + return (-1); + } + if (euid != -1 && seteuid(euid) < 0) + return (-1); + return (0); +} |