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Commit | Line | Data |
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de56407f | 1 | /* |
2 | * $Source$ | |
3 | * $Header$ | |
4 | */ | |
546bc43b | 5 | /* (c) Copyright 1988 by the Massachusetts Institute of Technology. */ |
6 | /* For copying and distribution information, please see the file */ | |
7 | /* <mit-copyright.h>. */ | |
de56407f | 8 | |
9 | #ifndef lint | |
10 | static char *rcsid_exec_002_c = "$Header$"; | |
11 | #endif lint | |
12 | ||
546bc43b | 13 | #include <mit-copyright.h> |
de56407f | 14 | #include <stdio.h> |
8b3ba58e | 15 | #include <errno.h> |
c57b6bd3 | 16 | #include <sys/types.h> |
c91c8276 | 17 | #ifdef _AIX |
18 | #undef _BSD | |
19 | #endif | |
de56407f | 20 | #include <sys/wait.h> |
c91c8276 | 21 | #ifdef _AIX |
22 | #define _BSD 44 | |
23 | #endif | |
6143ee87 | 24 | #include <signal.h> |
c8dc853f | 25 | #include <gdb.h> |
2ad0a777 | 26 | #include <moira.h> |
de56407f | 27 | #include "update.h" |
de56407f | 28 | |
29 | extern CONNECTION conn; | |
8b3ba58e | 30 | extern int code, errno, uid; |
31 | extern char *whoami; | |
32 | ||
984bd8ef | 33 | #if defined(vax) || defined(ibm032) |
34 | #define WEXITSTATUS(waitb) ((waitb).w_retcode) | |
35 | #endif | |
36 | ||
de56407f | 37 | |
38 | int | |
39 | exec_002(str) | |
40 | char *str; | |
41 | { | |
8a7d0639 | 42 | #ifdef POSIX |
984bd8ef | 43 | int waitb; |
8a7d0639 | 44 | sigset_t mask,oldmask; |
984bd8ef | 45 | #else |
de56407f | 46 | union wait waitb; |
8a7d0639 | 47 | int mask; |
984bd8ef | 48 | #endif |
8a7d0639 | 49 | int n, pid; |
de56407f | 50 | |
8b3ba58e | 51 | if (config_lookup("noexec")) { |
52 | code = EPERM; | |
53 | code = send_object(conn, (char *)&code, INTEGER_T); | |
54 | com_err(whoami, code, "Not allowed to execute"); | |
984bd8ef | 55 | return(0); |
8b3ba58e | 56 | } |
de56407f | 57 | str += 8; |
58 | while (*str == ' ') | |
59 | str++; | |
8a7d0639 | 60 | #ifdef POSIX |
61 | sigemptyset(&mask); | |
62 | sigaddset(&mask,SIGCHLD); | |
63 | sigprocmask(SIG_BLOCK,&mask,&oldmask); | |
64 | #else | |
6143ee87 | 65 | mask = sigblock(sigmask(SIGCHLD)); |
8a7d0639 | 66 | #endif |
de56407f | 67 | pid = fork(); |
68 | switch (pid) { | |
69 | case -1: | |
70 | n = errno; | |
8a7d0639 | 71 | #ifdef POSIX |
72 | sigprocmask(SIG_UNBLOCK,&oldmask,&mask); | |
73 | #else | |
6143ee87 | 74 | sigsetmask(mask); |
8a7d0639 | 75 | #endif |
de56407f | 76 | log_priority = log_ERROR; |
77 | com_err(whoami, errno, ": can't fork to run install script"); | |
78 | code = send_object(conn, (char *)&n, INTEGER_T); | |
79 | if (code) | |
80 | exit(1); | |
984bd8ef | 81 | return(0); |
de56407f | 82 | case 0: |
8b3ba58e | 83 | if (setuid(uid) < 0) { |
84 | com_err(whoami, errno, "Unable to setuid to %d\n", uid); | |
85 | exit(1); | |
86 | } | |
8a7d0639 | 87 | #ifdef POSIX |
88 | sigprocmask(SIG_UNBLOCK,&oldmask,&mask); | |
89 | #else | |
e19df9fb | 90 | sigsetmask(mask); |
8a7d0639 | 91 | #endif |
de56407f | 92 | execlp(str, str, (char *)NULL); |
93 | n = errno; | |
8a7d0639 | 94 | #ifdef POSIX |
95 | sigprocmask(SIG_UNBLOCK,&oldmask,&mask); | |
96 | #else | |
6143ee87 | 97 | sigsetmask(mask); |
8a7d0639 | 98 | #endif |
de56407f | 99 | log_priority = log_ERROR; |
100 | com_err(whoami, n, ": %s", str); | |
101 | (void) send_object(conn, (char *)&n, INTEGER_T); | |
102 | exit(1); | |
103 | default: | |
104 | do { | |
105 | n = wait(&waitb); | |
106 | } while (n != -1 && n != pid); | |
8a7d0639 | 107 | #ifdef POSIX |
108 | sigprocmask(SIG_UNBLOCK,&oldmask,&mask); | |
109 | #else | |
6143ee87 | 110 | sigsetmask(mask); |
8a7d0639 | 111 | #endif |
112 | #ifdef POSIX | |
4aba574b | 113 | if ( (WIFEXITED(waitb) && (WEXITSTATUS(waitb)!=0)) || WIFSIGNALED(waitb) ) { |
114 | /* This is not really correct. It will cause teh moira server to | |
115 | report a bogus error message if the script died on a signal. | |
116 | However this is the same thing that occurs in the non-POSIX | |
117 | case, and I don't know how to come up with a useful error based | |
118 | on the signal recieved. | |
119 | */ | |
984bd8ef | 120 | n = WEXITSTATUS(waitb) + ERROR_TABLE_BASE_sms; |
de56407f | 121 | log_priority = log_ERROR; |
984bd8ef | 122 | com_err(whoami, n, " child exited with status %d", |
123 | WEXITSTATUS(waitb)); | |
8a7d0639 | 124 | #else |
125 | if (waitb.w_status) { | |
126 | n = waitb.w_retcode + ERROR_TABLE_BASE_sms; | |
127 | log_priority = log_ERROR; | |
128 | com_err(whoami, n, " child exited with status %d", | |
129 | waitb.w_retcode); | |
130 | #endif | |
de56407f | 131 | code = send_object(conn, (char *)&n, INTEGER_T); |
c8dc853f | 132 | if (code) { |
de56407f | 133 | exit(1); |
c8dc853f | 134 | } |
135 | } else { | |
de56407f | 136 | code = send_ok(); |
137 | if (code) | |
c8dc853f | 138 | exit(1); |
de56407f | 139 | } |
140 | } | |
141 | } |