Ben Lindstrom | d9e0824 | 2001-07-22 19:32:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * The modules contains code to support cray t3e and sv1 computers. |
| 3 | * It is here to minimize the modifcations to the openssh base code. |
| 4 | */ |
| 5 | |
| 6 | #ifdef _CRAY |
| 7 | |
| 8 | #include <udb.h> |
| 9 | #include <tmpdir.h> |
| 10 | #include <unistd.h> |
| 11 | #include <sys/category.h> |
| 12 | #include <utmp.h> |
| 13 | #include <sys/jtab.h> |
| 14 | #include <signal.h> |
| 15 | #include <sys/stat.h> |
| 16 | #include <stdlib.h> |
| 17 | #include <pwd.h> |
| 18 | #include <fcntl.h> |
| 19 | #include <errno.h> |
| 20 | |
| 21 | char cray_tmpdir[TPATHSIZ+1]; /* job TMPDIR path */ |
| 22 | |
| 23 | /* |
| 24 | * Functions. |
| 25 | */ |
| 26 | int cray_setup(uid_t, char *); |
| 27 | void cray_retain_utmp(struct utmp *, int); |
| 28 | void cray_create_tmpdir(int, uid_t, gid_t); |
| 29 | void cray_delete_tmpdir(char *, int , uid_t); |
| 30 | void cray_job_termination_handler (int); |
| 31 | void cray_init_job(struct passwd *); |
| 32 | void cray_set_tmpdir(struct utmp *); |
| 33 | |
| 34 | /* |
| 35 | * Orignal written by: |
| 36 | * Wayne Schroeder |
| 37 | * San Diego Supercomputer Center |
| 38 | * schroeder@sdsc.edu |
| 39 | */ |
| 40 | int |
| 41 | cray_setup(uid_t uid, char *username) |
| 42 | { |
| 43 | struct udb *p; |
| 44 | extern struct udb *getudb(); |
| 45 | extern char *setlimits(); |
| 46 | int i, j; |
| 47 | int accts[MAXVIDS]; |
| 48 | int naccts; |
| 49 | int err; |
| 50 | char *sr; |
| 51 | int pid; |
| 52 | struct jtab jbuf; |
| 53 | int jid; |
| 54 | |
| 55 | if ((jid = getjtab (&jbuf)) < 0) { |
| 56 | debug("getjtab"); |
| 57 | return -1; |
| 58 | } |
| 59 | |
| 60 | /* Find all of the accounts for a particular user */ |
| 61 | err = setudb(); /* open and rewind the Cray User DataBase */ |
| 62 | if(err != 0) { |
| 63 | debug("UDB open failure"); |
| 64 | return -1; |
| 65 | } |
| 66 | naccts = 0; |
| 67 | while ((p = getudb()) != UDB_NULL) { |
| 68 | if (p->ue_uid == -1) break; |
| 69 | if(uid == p->ue_uid) { |
| 70 | for(j = 0; p->ue_acids[j] != -1 && j < MAXVIDS; j++) { |
| 71 | accts[naccts] = p->ue_acids[j]; |
| 72 | naccts++; |
| 73 | } |
| 74 | } |
| 75 | } |
| 76 | endudb(); /* close the udb */ |
| 77 | if (naccts == 0 || accts[0] == 0) { |
| 78 | debug("No Cray accounts found"); |
| 79 | return -1; |
| 80 | } |
| 81 | |
| 82 | /* Perhaps someday we'll prompt users who have multiple accounts |
| 83 | to let them pick one (like CRI's login does), but for now just set |
| 84 | the account to the first entry. */ |
| 85 | if (acctid(0, accts[0]) < 0) { |
| 86 | debug("System call acctid failed, accts[0]=%d",accts[0]); |
| 87 | return -1; |
| 88 | } |
| 89 | |
| 90 | /* Now set limits, including CPU time for the (interactive) job and process, |
| 91 | and set up permissions (for chown etc), etc. This is via an internal CRI |
| 92 | routine, setlimits, used by CRI's login. */ |
| 93 | |
| 94 | pid = getpid(); |
| 95 | sr = setlimits(username, C_PROC, pid, UDBRC_INTER); |
| 96 | if (sr != NULL) { |
| 97 | debug("%.200s", sr); |
| 98 | return -1; |
| 99 | } |
| 100 | sr = setlimits(username, C_JOB, jid, UDBRC_INTER); |
| 101 | if (sr != NULL) { |
| 102 | debug("%.200s", sr); |
| 103 | return -1; |
| 104 | } |
| 105 | |
| 106 | return 0; |
| 107 | } |
| 108 | |
| 109 | |
| 110 | /* |
| 111 | * Retain utmp/wtmp information - used by cray accounting. |
| 112 | */ |
| 113 | void |
| 114 | cray_retain_utmp(struct utmp *ut, int pid) |
| 115 | { |
| 116 | int fd; |
| 117 | struct utmp utmp; |
| 118 | |
| 119 | if ((fd = open(UTMP_FILE, O_RDONLY)) >= 0) { |
| 120 | while (read(fd, (char *)&utmp, sizeof(utmp)) == sizeof(utmp)) { |
| 121 | if (pid == utmp.ut_pid) { |
| 122 | ut->ut_jid = utmp.ut_jid; |
| 123 | strncpy(ut->ut_tpath, utmp.ut_tpath, TPATHSIZ); |
| 124 | strncpy(ut->ut_host, utmp.ut_host, strlen(utmp.ut_host)); |
| 125 | strncpy(ut->ut_name, utmp.ut_name, strlen(utmp.ut_name)); |
| 126 | break; |
| 127 | } |
| 128 | } |
| 129 | close(fd); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | /* |
| 134 | * tmpdir support. |
| 135 | */ |
| 136 | |
| 137 | /* |
| 138 | * find and delete jobs tmpdir. |
| 139 | */ |
| 140 | void |
| 141 | cray_delete_tmpdir(char *login, int jid, uid_t uid) |
| 142 | { |
| 143 | int child; |
| 144 | static char jtmp[TPATHSIZ]; |
| 145 | struct stat statbuf; |
| 146 | int c; |
| 147 | int wstat; |
| 148 | |
| 149 | for (c = 'a'; c <= 'z'; c++) { |
| 150 | snprintf(jtmp, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c); |
| 151 | if (stat(jtmp, &statbuf) == 0 && statbuf.st_uid == uid) break; |
| 152 | } |
| 153 | |
| 154 | if (c > 'z') return; |
| 155 | |
| 156 | if ((child = fork()) == 0) { |
| 157 | execl(CLEANTMPCMD, CLEANTMPCMD, login, jtmp, 0); |
| 158 | fatal("ssh_cray_rmtmpdir: execl of CLEANTMPCMD failed"); |
| 159 | } |
| 160 | |
| 161 | while (waitpid (child, &wstat, 0) == -1 && errno == EINTR); |
| 162 | } |
| 163 | |
| 164 | /* |
| 165 | * Remove tmpdir on job termination. |
| 166 | */ |
| 167 | void |
| 168 | cray_job_termination_handler (int sig) |
| 169 | { |
| 170 | int jid; |
| 171 | char *login = NULL; |
| 172 | struct jtab jtab; |
| 173 | |
| 174 | debug("Received SIG JOB."); |
| 175 | |
| 176 | if ((jid = waitjob(&jtab)) == -1 || |
| 177 | (login = uid2nam(jtab.j_uid)) == NULL) return; |
| 178 | |
| 179 | cray_delete_tmpdir(login, jid, jtab.j_uid); |
| 180 | } |
| 181 | |
| 182 | |
| 183 | /* |
| 184 | * Set job id and create tmpdir directory. |
| 185 | */ |
| 186 | void |
| 187 | cray_init_job(struct passwd *pw) |
| 188 | { |
| 189 | int jid; |
| 190 | int c; |
| 191 | |
| 192 | jid = setjob(pw->pw_uid, WJSIGNAL); |
| 193 | if (jid < 0) fatal("System call setjob failure"); |
| 194 | |
| 195 | for (c = 'a'; c <= 'z'; c++) { |
| 196 | snprintf(cray_tmpdir, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c); |
| 197 | if (mkdir(cray_tmpdir, JTMPMODE) != 0) continue; |
| 198 | if (chown(cray_tmpdir, pw->pw_uid, pw->pw_gid) != 0) { |
| 199 | rmdir(cray_tmpdir); |
| 200 | continue; |
| 201 | } |
| 202 | break; |
| 203 | } |
| 204 | |
| 205 | if (c > 'z') cray_tmpdir[0] = '\0'; |
| 206 | } |
| 207 | |
| 208 | void |
| 209 | cray_set_tmpdir(struct utmp *ut) |
| 210 | { |
| 211 | int jid; |
| 212 | struct jtab jbuf; |
| 213 | |
| 214 | if ((jid = getjtab (&jbuf)) < 0) return; |
| 215 | |
| 216 | /* |
| 217 | * Set jid and tmpdir in utmp record. |
| 218 | */ |
| 219 | ut->ut_jid = jid; |
| 220 | strncpy(ut->ut_tpath, cray_tmpdir, TPATHSIZ); |
| 221 | } |
| 222 | |
| 223 | #endif |