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- (stevesk) sshpty.c, cray.[ch]: whitespace, formatting and cleanup 

for some #ifdef _CRAY code; ok wendyp@cray.com
This commit is contained in:
Kevin Steves 2001-08-14 20:31:49 +00:00
parent 56cb92968b
commit f744b512f3
3 changed files with 169 additions and 154 deletions
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244
openbsd-compat/bsd-cray.c
View File

@ -1,3 +1,7 @@
/*
* XXX: license?
*/
/*
* The modules contains code to support cray t3e and sv1 computers.
* It is here to minimize the modifcations to the openssh base code.
@ -25,7 +29,7 @@
#include "bsd-cray.h"
char cray_tmpdir[TPATHSIZ+1]; /* job TMPDIR path */
char cray_tmpdir[TPATHSIZ+1]; /* job TMPDIR path */
/*
* Functions.
@ -38,7 +42,7 @@ void cray_init_job(struct passwd *);
void cray_set_tmpdir(struct utmp *);
/*
/*
* Orignal written by:
* Wayne Schroeder
* San Diego Supercomputer Center
@ -47,56 +51,60 @@ void cray_set_tmpdir(struct utmp *);
void
cray_setup(uid_t uid, char *username)
{
struct udb *p;
struct udb *p;
extern char *setlimits();
int i, j;
int accts[MAXVIDS];
int naccts;
int err;
char *sr;
int pid;
struct jtab jbuf;
int jid;
int i, j;
int accts[MAXVIDS];
int naccts;
int err;
char *sr;
int pid;
struct jtab jbuf;
int jid;
if ((jid = getjtab (&jbuf)) < 0) fatal("getjtab: no jid");
if ((jid = getjtab(&jbuf)) < 0)
fatal("getjtab: no jid");
err = setudb(); /* open and rewind the Cray User DataBase */
if(err != 0) fatal("UDB open failure");
naccts = 0;
err = setudb(); /* open and rewind the Cray User DataBase */
if (err != 0)
fatal("UDB open failure");
naccts = 0;
p = getudbnam(username);
if (p == NULL) fatal("No UDB entry for %s", username);
if(uid != p->ue_uid)
fatal("UDB etnry %s uid(%d) does not match uid %d\n",
username, p->ue_uid, uid);
for(j = 0; p->ue_acids[j] != -1 && j < MAXVIDS; j++) {
accts[naccts] = p->ue_acids[j];
naccts++;
}
endudb(); /* close the udb */
if (naccts != 0) {
/* Perhaps someday we'll prompt users who have multiple accounts
to let them pick one (like CRI's login does), but for now just set
the account to the first entry. */
if (acctid(0, accts[0]) < 0)
fatal("System call acctid failed, accts[0]=%d",accts[0]);
if (p == NULL)
fatal("No UDB entry for %.100s", username);
if (uid != p->ue_uid)
fatal("UDB etnry %.100s uid(%d) does not match uid %d",
username, p->ue_uid, uid);
for (j = 0; p->ue_acids[j] != -1 && j < MAXVIDS; j++) {
accts[naccts] = p->ue_acids[j];
naccts++;
}
/* Now set limits, including CPU time for the (interactive) job and process,
and set up permissions (for chown etc), etc. This is via an internal CRI
routine, setlimits, used by CRI's login. */
endudb(); /* close the udb */
pid = getpid();
sr = setlimits(username, C_PROC, pid, UDBRC_INTER);
if (sr != NULL) fatal("%.200s", sr);
if (naccts != 0) {
/* Perhaps someday we'll prompt users who have multiple accounts
to let them pick one (like CRI's login does), but for now just set
the account to the first entry. */
if (acctid(0, accts[0]) < 0)
fatal("System call acctid failed, accts[0]=%d", accts[0]);
}
sr = setlimits(username, C_JOB, jid, UDBRC_INTER);
if (sr != NULL) fatal("%.200s", sr);
/* Now set limits, including CPU time for the (interactive) job and process,
and set up permissions (for chown etc), etc. This is via an internal CRI
routine, setlimits, used by CRI's login. */
pid = getpid();
sr = setlimits(username, C_PROC, pid, UDBRC_INTER);
if (sr != NULL)
fatal("%.200s", sr);
sr = setlimits(username, C_JOB, jid, UDBRC_INTER);
if (sr != NULL)
fatal("%.200s", sr);
}
/*
/*
* The rc.* and /etc/sdaemon methods of starting a program on unicos/unicosmk
* can have pal privileges that sshd can inherit which
* could allow a user to su to root with out a password.
@ -106,34 +114,39 @@ void
drop_cray_privs()
{
#if defined(_SC_CRAY_PRIV_SU)
priv_proc_t* privstate;
int result;
extern int priv_set_proc();
extern priv_proc_t* priv_init_proc();
struct usrv usrv;
priv_proc_t* privstate;
int result;
extern int priv_set_proc();
extern priv_proc_t* priv_init_proc();
struct usrv usrv;
/*
* If ether of theses two flags are not set
* then don't allow this version of ssh to run.
*/
if (!sysconf(_SC_CRAY_PRIV_SU)) fatal("Not PRIV_SU system.");
if (!sysconf(_SC_CRAY_POSIX_PRIV)) fatal("Not POSIX_PRIV.");
* then don't allow this version of ssh to run.
*/
if (!sysconf(_SC_CRAY_PRIV_SU))
fatal("Not PRIV_SU system.");
if (!sysconf(_SC_CRAY_POSIX_PRIV))
fatal("Not POSIX_PRIV.");
debug ("Dropping privileges.");
debug("Dropping privileges.");
memset(&usrv, 0, sizeof(usrv));
if (setusrv(&usrv) < 0)
fatal ("%s(%d): setusrv(): %s\n", __FILE__, __LINE__, strerror(errno));
if (setusrv(&usrv) < 0)
fatal("%s(%d): setusrv(): %s\n", __FILE__, __LINE__,
strerror(errno));
if ((privstate = priv_init_proc()) != NULL) {
result = priv_set_proc(privstate);
if ( result != 0 ) fatal ("%s(%d): priv_set_proc(): %s\n",
__FILE__, __LINE__, strerror(errno));
priv_free_proc(privstate);
}
debug ("Privileges should be cleared...");
result = priv_set_proc(privstate);
if (result != 0 )
fatal("%s(%d): priv_set_proc(): %s\n",
__FILE__, __LINE__, strerror(errno));
priv_free_proc(privstate);
}
debug ("Privileges should be cleared...");
#else
Cray systems must be run with _SC_CRAY_PRIV_SU on!
/* XXX: do this differently */
# error Cray systems must be run with _SC_CRAY_PRIV_SU on!
#endif
}
@ -145,20 +158,21 @@ void
cray_retain_utmp(struct utmp *ut, int pid)
{
int fd;
struct utmp utmp;
struct utmp utmp;
if ((fd = open(UTMP_FILE, O_RDONLY)) >= 0) {
while (read(fd, (char *)&utmp, sizeof(utmp)) == sizeof(utmp)) {
if (pid == utmp.ut_pid) {
ut->ut_jid = utmp.ut_jid;
strncpy(ut->ut_tpath, utmp.ut_tpath, TPATHSIZ);
strncpy(ut->ut_host, utmp.ut_host, strlen(utmp.ut_host));
strncpy(ut->ut_name, utmp.ut_name, strlen(utmp.ut_name));
break;
if ((fd = open(UTMP_FILE, O_RDONLY)) != -1) {
while (read(fd, (char *)&utmp, sizeof(utmp)) == sizeof(utmp)) {
if (pid == utmp.ut_pid) {
ut->ut_jid = utmp.ut_jid;
strncpy(ut->ut_tpath, utmp.ut_tpath, TPATHSIZ);
strncpy(ut->ut_host, utmp.ut_host, strlen(utmp.ut_host));
strncpy(ut->ut_name, utmp.ut_name, strlen(utmp.ut_name));
break;
}
}
close(fd);
}
}
/* XXX: error message? */
}
/*
@ -172,31 +186,34 @@ void
cray_delete_tmpdir(char *login, int jid, uid_t uid)
{
int child;
static char jtmp[TPATHSIZ];
struct stat statbuf;
int c;
int wstat;
static char jtmp[TPATHSIZ];
struct stat statbuf;
int c;
int wstat;
for (c = 'a'; c <= 'z'; c++) {
snprintf(jtmp, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c);
if (stat(jtmp, &statbuf) == 0 && statbuf.st_uid == uid) break;
}
for (c = 'a'; c <= 'z'; c++) {
snprintf(jtmp, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c);
if (stat(jtmp, &statbuf) == 0 && statbuf.st_uid == uid)
break;
}
if (c > 'z') return;
if (c > 'z')
return;
if ((child = fork()) == 0) {
execl(CLEANTMPCMD, CLEANTMPCMD, login, jtmp, 0);
fatal("ssh_cray_rmtmpdir: execl of CLEANTMPCMD failed");
}
if ((child = fork()) == 0) {
execl(CLEANTMPCMD, CLEANTMPCMD, login, jtmp, 0);
fatal("cray_delete_tmpdir: execl of CLEANTMPCMD failed");
}
while (waitpid (child, &wstat, 0) == -1 && errno == EINTR);
while (waitpid(child, &wstat, 0) == -1 && errno == EINTR)
;
}
/*
* Remove tmpdir on job termination.
*/
void
cray_job_termination_handler (int sig)
cray_job_termination_handler(int sig)
{
int jid;
char *login = NULL;
@ -205,50 +222,53 @@ cray_job_termination_handler (int sig)
debug("Received SIG JOB.");
if ((jid = waitjob(&jtab)) == -1 ||
(login = uid2nam(jtab.j_uid)) == NULL) return;
(login = uid2nam(jtab.j_uid)) == NULL)
return;
cray_delete_tmpdir(login, jid, jtab.j_uid);
}
/*
* Set job id and create tmpdir directory.
*/
void
void
cray_init_job(struct passwd *pw)
{
int jid;
int c;
{
int jid;
int c;
jid = setjob(pw->pw_uid, WJSIGNAL);
if (jid < 0) fatal("System call setjob failure");
jid = setjob(pw->pw_uid, WJSIGNAL);
if (jid < 0)
fatal("System call setjob failure");
for (c = 'a'; c <= 'z'; c++) {
snprintf(cray_tmpdir, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c);
if (mkdir(cray_tmpdir, JTMPMODE) != 0) continue;
if (chown(cray_tmpdir, pw->pw_uid, pw->pw_gid) != 0) {
rmdir(cray_tmpdir);
continue;
}
break;
}
for (c = 'a'; c <= 'z'; c++) {
snprintf(cray_tmpdir, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c);
if (mkdir(cray_tmpdir, JTMPMODE) != 0)
continue;
if (chown(cray_tmpdir, pw->pw_uid, pw->pw_gid) != 0) {
rmdir(cray_tmpdir);
continue;
}
break;
}
if (c > 'z') cray_tmpdir[0] = '\0';
}
if (c > 'z')
cray_tmpdir[0] = '\0';
}
void
cray_set_tmpdir(struct utmp *ut)
{
int jid;
struct jtab jbuf;
{
int jid;
struct jtab jbuf;
if ((jid = getjtab (&jbuf)) < 0) return;
if ((jid = getjtab(&jbuf)) < 0)
return;
/*
* Set jid and tmpdir in utmp record.
*/
*/
ut->ut_jid = jid;
strncpy(ut->ut_tpath, cray_tmpdir, TPATHSIZ);
}
}
#endif

10
openbsd-compat/bsd-cray.h
View File

@ -1,13 +1,11 @@
#ifndef _BSD_CRAY_H
#define _BSD_CRAY_H
#ifdef _CRAY
void cray_init_job(struct passwd *); /* init cray job */
void cray_job_termination_handler(int); /* process end of job signal */
void cray_setup(uid_t, char *); /* set cray limits */
extern char cray_tmpdir[]; /* cray tmpdir */
void cray_init_job(struct passwd *); /* init cray job */
void cray_job_termination_handler(int); /* process end of job signal */
void cray_setup(uid_t, char *); /* set cray limits */
extern char cray_tmpdir[]; /* cray tmpdir */
#endif
#endif /* _BSD_CRAY_H */

69
sshpty.c
View File

@ -168,27 +168,28 @@ pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
int highpty;
#ifdef _SC_CRAY_NPTY
highpty = sysconf(_SC_CRAY_NPTY);
if (highpty == -1)
highpty = 128;
highpty = sysconf(_SC_CRAY_NPTY);
if (highpty == -1)
highpty = 128;
#else
highpty = 128;
highpty = 128;
#endif
for (i = 0; i < highpty; i++) {
snprintf(buf, sizeof(buf), "/dev/pty/%03d", i);
*ptyfd = open(buf, O_RDWR|O_NOCTTY);
if (*ptyfd < 0) continue;
snprintf(namebuf, namebuflen, "/dev/ttyp%03d", i);
/* Open the slave side. */
*ttyfd = open(namebuf, O_RDWR|O_NOCTTY);
if (*ttyfd < 0) {
for (i = 0; i < highpty; i++) {
snprintf(buf, sizeof(buf), "/dev/pty/%03d", i);
*ptyfd = open(buf, O_RDWR|O_NOCTTY);
if (*ptyfd < 0)
continue;
snprintf(namebuf, namebuflen, "/dev/ttyp%03d", i);
/* Open the slave side. */
*ttyfd = open(namebuf, O_RDWR|O_NOCTTY);
if (*ttyfd < 0) {
error("%.100s: %.100s", namebuf, strerror(errno));
close(*ptyfd);
}
return 1;
}
return 0;
close(*ptyfd);
}
return 1;
}
return 0;
#else
/* BSD-style pty code. */
char buf[64];
@ -250,29 +251,25 @@ pty_make_controlling_tty(int *ttyfd, const char *ttyname)
#ifdef _CRAY
int fd;
if (setsid() < 0)
error("setsid: %.100s", strerror(errno));
if (setsid() < 0)
error("setsid: %.100s", strerror(errno));
fd = open(ttyname, O_RDWR|O_NOCTTY);
if (fd >= 0) {
signal(SIGHUP, SIG_IGN);
ioctl(fd, TCVHUP, (char *)0);
signal(SIGHUP, SIG_DFL);
setpgid(0,0);
close(fd);
fd = open(ttyname, O_RDWR|O_NOCTTY);
if (fd != -1) {
signal(SIGHUP, SIG_IGN);
ioctl(fd, TCVHUP, (char *)NULL);
signal(SIGHUP, SIG_DFL);
setpgid(0, 0);
close(fd);
} else {
error("Failed to disconnect from controlling tty.");
error("Failed to disconnect from controlling tty.");
}
debug("Setting controlling tty using TCSETCTTY.\n");
ioctl(*ttyfd, TCSETCTTY, NULL);
fd = open("/dev/tty", O_RDWR);
if (fd < 0)
error("%.100s: %.100s", ttyname, strerror(errno));
debug("Setting controlling tty using TCSETCTTY.");
ioctl(*ttyfd, TCSETCTTY, NULL);
fd = open("/dev/tty", O_RDWR);
if (fd < 0)
error("%.100s: %.100s", ttyname, strerror(errno));
close(*ttyfd);
*ttyfd = fd;
#else