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struct uucred

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Change-Id: Ia97cb6c38bb566be30d568a252ae7b76142a21dd
This commit is contained in:
Lionel Sambuc 2013-04-18 11:07:44 +02:00
parent 744378194d
commit 55dcce66c6
11 changed files with 63 additions and 64 deletions
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2
include/sys/ioc_net.h
View file

@ -86,7 +86,7 @@ struct msg_control
/* setsockopt/setsockopt for unix domain sockets */ /* setsockopt/setsockopt for unix domain sockets */
#define NWIOGUDSSOTYPE _IOR('n', 90, int) /* SO_TYPE */ #define NWIOGUDSSOTYPE _IOR('n', 90, int) /* SO_TYPE */
#define NWIOGUDSPEERCRED _IOR('n', 91, struct ucred) /* SO_PEERCRED */ #define NWIOGUDSPEERCRED _IOR('n', 91, struct uucred) /* SO_PEERCRED */
#define NWIOGUDSSNDBUF _IOR('n', 92, size_t) /* SO_SNDBUF */ #define NWIOGUDSSNDBUF _IOR('n', 92, size_t) /* SO_SNDBUF */
#define NWIOSUDSSNDBUF _IOW('n', 93, size_t) /* SO_SNDBUF */ #define NWIOSUDSSNDBUF _IOW('n', 93, size_t) /* SO_SNDBUF */
#define NWIOGUDSRCVBUF _IOR('n', 94, size_t) /* SO_RCVBUF */ #define NWIOGUDSRCVBUF _IOR('n', 94, size_t) /* SO_RCVBUF */

8
lib/libc/net/minix/getpeereid.c
View file

@ -9,11 +9,11 @@
*/ */
int getpeereid(int sd, uid_t *euid, gid_t *egid) { int getpeereid(int sd, uid_t *euid, gid_t *egid) {
int rc; int rc;
struct ucred cred; struct uucred cred;
socklen_t ucred_length; socklen_t ucred_length;
/* Initialize Data Structures */ /* Initialize Data Structures */
ucred_length = sizeof(struct ucred); ucred_length = sizeof(struct uucred);
memset(&cred, '\0', ucred_length); memset(&cred, '\0', ucred_length);
/* Validate Input Parameters */ /* Validate Input Parameters */
@ -26,8 +26,8 @@ int getpeereid(int sd, uid_t *euid, gid_t *egid) {
rc = getsockopt(sd, SOL_SOCKET, SO_PEERCRED, &cred, &ucred_length); rc = getsockopt(sd, SOL_SOCKET, SO_PEERCRED, &cred, &ucred_length);
if (rc == 0) { if (rc == 0) {
/* Success - return the results */ /* Success - return the results */
*euid = cred.uid; *euid = cred.cr_uid;
*egid = cred.gid; *egid = cred.cr_gid;
return 0; return 0;
} else { } else {
/* Failure - getsockopt takes care of setting errno */ /* Failure - getsockopt takes care of setting errno */

4
lib/libc/sys-minix/getsockopt.c
View file

@ -217,14 +217,14 @@ static int _uds_getsockopt(int sock, int level, int option_name,
if (level == SOL_SOCKET && option_name == SO_PEERCRED) if (level == SOL_SOCKET && option_name == SO_PEERCRED)
{ {
struct ucred cred; struct uucred cred;
r= ioctl(sock, NWIOGUDSPEERCRED, &cred); r= ioctl(sock, NWIOGUDSPEERCRED, &cred);
if (r == -1) { if (r == -1) {
return -1; return -1;
} }
getsockopt_copy(&cred, sizeof(struct ucred), option_value, getsockopt_copy(&cred, sizeof(struct uucred), option_value,
option_len); option_len);
return 0; return 0;
} }

40
lib/libminlib/getnucred.c
View file

@ -1,28 +1,32 @@
#include <lib.h>
#include <errno.h> #include <errno.h>
#include <sys/ucred.h> #include <lib.h>
#include <string.h>
#include <unistd.h> #include <unistd.h>
int getnucred(endpoint_t proc_ep, struct ucred *ucred) #include <sys/ucred.h>
int
getnucred(endpoint_t proc_ep, struct uucred *ucred)
{ {
message m; message m;
pid_t pid; pid_t pid;
if (ucred == NULL) { if (ucred == NULL) {
errno = EFAULT; errno = EFAULT;
return -1; return -1;
} }
m.m1_i1 = proc_ep; /* search for this process */ m.m1_i1 = proc_ep; /* search for this process */
pid = _syscall(PM_PROC_NR, GETEPINFO, &m); pid = _syscall(PM_PROC_NR, GETEPINFO, &m);
if (pid < 0) { if (pid < 0) {
return -1; return -1;
} }
ucred->pid = pid; /* Only two fields are used for now, so ensure the rest is zeroed out. */
ucred->uid = m.PM_NUID; memset(ucred, 0, sizeof(struct uucred));
ucred->gid = m.PM_NGID; ucred->cr_uid = m.PM_NUID;
ucred->cr_gid = m.PM_NGID;
return 0; return 0;
} }

4
man/man2/getnucred.2
View file

@ -6,10 +6,10 @@ getnucred \- obtain the credentials that correspond to the given endpoint.
#include <sys/socket.h> #include <sys/socket.h>
.in +5 .in +5
.ti -5 .ti -5
#include <unistd.h> #include <sys/ucred.h>
.ti -5 .ti -5
int getnucred(endpoint_t \fIproc_ep\fP, struct ucred * \fIucred\fP); int getnucred(endpoint_t \fIproc_ep\fP, struct uucred * \fIucred\fP);
.br .br
.ft P .ft P
.SH DESCRIPTION .SH DESCRIPTION

6
servers/pfs/dev_uds.c
View file

@ -40,7 +40,7 @@ static int uds_perform_write(int minor, endpoint_t m_source, size_t
int uds_open(message *dev_m_in, message *dev_m_out) int uds_open(message *dev_m_in, message *dev_m_out)
{ {
message fs_m_in, fs_m_out; message fs_m_in, fs_m_out;
struct ucred ucred; struct uucred ucred;
int rc, i; int rc, i;
int minor; int minor;
@ -178,8 +178,8 @@ int uds_open(message *dev_m_in, message *dev_m_out)
fs_m_in.m_type = REQ_NEWNODE; fs_m_in.m_type = REQ_NEWNODE;
fs_m_in.REQ_MODE = I_NAMED_PIPE; fs_m_in.REQ_MODE = I_NAMED_PIPE;
fs_m_in.REQ_DEV = NO_DEV; fs_m_in.REQ_DEV = NO_DEV;
fs_m_in.REQ_UID = ucred.uid; fs_m_in.REQ_UID = ucred.cr_uid;
fs_m_in.REQ_GID = ucred.gid; fs_m_in.REQ_GID = ucred.cr_gid;
/* Request a new inode on the pipe file system */ /* Request a new inode on the pipe file system */

1
servers/pfs/inc.h
View file

@ -10,6 +10,7 @@
#include <sys/select.h> #include <sys/select.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/ucred.h>
#include <limits.h> #include <limits.h>
#include <errno.h> #include <errno.h>
#include <signal.h> #include <signal.h>

10
servers/pfs/uds.c
View file

@ -960,7 +960,7 @@ int do_getsockopt_peercred(message *dev_m_in, message *dev_m_out)
int minor; int minor;
int peer_minor; int peer_minor;
int rc; int rc;
struct ucred cred; struct uucred cred;
#if DEBUG == 1 #if DEBUG == 1
static int call_count = 0; static int call_count = 0;
@ -991,7 +991,7 @@ int do_getsockopt_peercred(message *dev_m_in, message *dev_m_out)
} }
rc = sys_safecopyto(VFS_PROC_NR, (cp_grant_id_t) dev_m_in->IO_GRANT, rc = sys_safecopyto(VFS_PROC_NR, (cp_grant_id_t) dev_m_in->IO_GRANT,
(vir_bytes) 0, (vir_bytes) &cred, sizeof(struct ucred)); (vir_bytes) 0, (vir_bytes) &cred, sizeof(struct uucred));
return rc ? EIO : OK; return rc ? EIO : OK;
} }
@ -1352,10 +1352,10 @@ static int recv_cred(int minor, struct ancillary *data,
cmsg = CMSG_NXTHDR(&msghdr, cmsg); cmsg = CMSG_NXTHDR(&msghdr, cmsg);
} }
cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred)); cmsg->cmsg_len = CMSG_LEN(sizeof(struct uucred));
cmsg->cmsg_level = SOL_SOCKET; cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_CREDENTIALS; cmsg->cmsg_type = SCM_CREDENTIALS;
memcpy(CMSG_DATA(cmsg), &(data->cred), sizeof(struct ucred)); memcpy(CMSG_DATA(cmsg), &(data->cred), sizeof(struct uucred));
return OK; return OK;
} }
@ -1481,7 +1481,7 @@ int do_recvmsg(message *dev_m_in, message *dev_m_out)
/* if there is room we also include credentials */ /* if there is room we also include credentials */
controllen_desired = controllen_needed + controllen_desired = controllen_needed +
CMSG_LEN(sizeof(struct ucred)); CMSG_LEN(sizeof(struct uucred));
if (controllen_needed > controllen_avail) { if (controllen_needed > controllen_avail) {
return EOVERFLOW; return EOVERFLOW;

2
servers/pfs/uds.h
View file

@ -26,7 +26,7 @@ struct ancillary {
filp_id_t filps[OPEN_MAX]; filp_id_t filps[OPEN_MAX];
int fds[OPEN_MAX]; int fds[OPEN_MAX];
int nfiledes; int nfiledes;
struct ucred cred; struct uucred cred;
}; };
/* /*

12
sys/sys/ucred.h
View file

@ -43,12 +43,6 @@
/* /*
* Credentials. * Credentials.
*/ */
struct ucred
{
pid_t pid;
uid_t uid;
gid_t gid;
};
/* Userland's view of credentials. This should not change */ /* Userland's view of credentials. This should not change */
struct uucred { struct uucred {
@ -59,9 +53,9 @@ struct uucred {
gid_t cr_groups[NGROUPS_MAX]; /* groups */ gid_t cr_groups[NGROUPS_MAX]; /* groups */
}; };
#ifdef __minix #if defined(__minix)
#include <minix/type.h> #include <minix/type.h>
int getnucred(endpoint_t proc_ep, struct ucred *ucred);
#endif
int getnucred(endpoint_t proc_ep, struct uucred *ucred);
#endif /* defined(__minix) */
#endif /* !_SYS_UCRED_H_ */ #endif /* !_SYS_UCRED_H_ */

38
test/test56.c
View file

@ -385,7 +385,7 @@ void test_socketpair(void)
void test_ucred(void) void test_ucred(void)
{ {
struct ucred credentials; struct uucred credentials;
socklen_t ucred_length; socklen_t ucred_length;
uid_t euid = geteuid(); uid_t euid = geteuid();
gid_t egid = getegid(); gid_t egid = getegid();
@ -394,7 +394,7 @@ void test_ucred(void)
debug("Test credentials passing"); debug("Test credentials passing");
ucred_length = sizeof(struct ucred); ucred_length = sizeof(struct uucred);
rc = socketpair(PF_UNIX, SOCK_STREAM, 0, sv); rc = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
if (rc == -1) { if (rc == -1) {
@ -406,18 +406,18 @@ void test_ucred(void)
&ucred_length); &ucred_length);
if (rc == -1) { if (rc == -1) {
test_fail("getsockopt(SO_PEERCRED) failed"); test_fail("getsockopt(SO_PEERCRED) failed");
} else if (credentials.pid != getpid() || } else if (credentials.cr_ngroups != 0 ||
credentials.uid != geteuid() || credentials.cr_uid != geteuid() ||
credentials.gid != getegid()) { credentials.cr_gid != getegid()) {
/* printf("%d=%d %d=%d %d=%d",credentials.pid, getpid(), /* printf("%d=%d %d=%d %d=%d",credentials.cr_ngroups, 0,
credentials.uid, geteuid(), credentials.gid, getegid()); */ credentials.cr_uid, geteuid(), credentials.cr_gid, getegid()); */
test_fail("Credential passing gave us the wrong cred"); test_fail("Credential passing gave us the wrong cred");
} }
rc = getpeereid(sv[0], &euid, &egid); rc = getpeereid(sv[0], &euid, &egid);
if (rc == -1) { if (rc == -1) {
test_fail("getpeereid(sv[0], &euid, &egid) failed"); test_fail("getpeereid(sv[0], &euid, &egid) failed");
} else if (credentials.uid != euid || credentials.gid != egid) { } else if (credentials.cr_uid != euid || credentials.cr_gid != egid) {
test_fail("getpeereid() didn't give the correct euid/egid"); test_fail("getpeereid() didn't give the correct euid/egid");
} }
@ -1195,7 +1195,7 @@ void test_xfer_sighdlr(int sig)
*/ */
void test_xfer_client(void) void test_xfer_client(void)
{ {
struct ucred credentials; struct uucred credentials;
socklen_t ucred_length; socklen_t ucred_length;
struct timeval tv; struct timeval tv;
fd_set readfds; fd_set readfds;
@ -1208,7 +1208,7 @@ void test_xfer_client(void)
debug("[client] entering test_xfer_client()"); debug("[client] entering test_xfer_client()");
errct = 0; /* reset error count */ errct = 0; /* reset error count */
ucred_length = sizeof(struct ucred); ucred_length = sizeof(struct uucred);
memset(&buf, '\0', sizeof(buf)); memset(&buf, '\0', sizeof(buf));
while (server_ready == 0) { while (server_ready == 0) {
@ -1296,10 +1296,10 @@ void test_xfer_client(void)
if (rc == -1) { if (rc == -1) {
test_fail("[client] getsockopt() failed"); test_fail("[client] getsockopt() failed");
} else if (credentials.uid != geteuid() || } else if (credentials.cr_uid != geteuid() ||
credentials.gid != getegid()) { credentials.cr_gid != getegid()) {
printf("%d=%d=%d %d=%d=%d\n", credentials.uid, getuid(), printf("%d=%d=%d %d=%d=%d\n", credentials.cr_uid, getuid(),
geteuid(), credentials.gid, getgid(), getegid()); geteuid(), credentials.cr_gid, getgid(), getegid());
test_fail("[client] Credential passing gave us a bad UID/GID"); test_fail("[client] Credential passing gave us a bad UID/GID");
} }
@ -2106,7 +2106,7 @@ void test_scm_credentials(void)
int rc; int rc;
int src; int src;
int dst; int dst;
struct ucred cred; struct uucred cred;
struct cmsghdr *cmsg = NULL; struct cmsghdr *cmsg = NULL;
struct sockaddr_un addr; struct sockaddr_un addr;
struct iovec iov[3]; struct iovec iov[3];
@ -2233,20 +2233,20 @@ void test_scm_credentials(void)
debug("looking for credentials"); debug("looking for credentials");
memset(&cred, '\0', sizeof(struct ucred)); memset(&cred, '\0', sizeof(struct uucred));
for (cmsg = CMSG_FIRSTHDR(&msg2); cmsg != NULL; for (cmsg = CMSG_FIRSTHDR(&msg2); cmsg != NULL;
cmsg = CMSG_NXTHDR(&msg2, cmsg)) { cmsg = CMSG_NXTHDR(&msg2, cmsg)) {
if (cmsg->cmsg_level == SOL_SOCKET && if (cmsg->cmsg_level == SOL_SOCKET &&
cmsg->cmsg_type == SCM_CREDENTIALS) { cmsg->cmsg_type == SCM_CREDENTIALS) {
memcpy(&cred, CMSG_DATA(cmsg), sizeof(struct ucred)); memcpy(&cred, CMSG_DATA(cmsg), sizeof(struct uucred));
break; break;
} }
} }
if (cred.pid != getpid() || cred.uid != geteuid() || if (cred.cr_ngroups != 0 || cred.cr_uid != geteuid() ||
cred.gid != getegid()) { cred.cr_gid != getegid()) {
test_fail("did no receive the proper credentials"); test_fail("did no receive the proper credentials");
} }