| 1 | /*
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| 2 | * Missing stuff from OS's
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| 3 | */
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| 4 |
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| 5 | #ifndef lint
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| 6 | static char rcsid[] = "$FreeBSD: src/usr.bin/make/util.c,v 1.5.2.2 2001/02/13 03:13:58 will Exp $";
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| 7 | #endif
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| 8 |
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| 9 | #include <stdio.h>
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| 10 | #include <errno.h>
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| 11 | #include "make.h"
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| 12 |
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| 13 | #if !__STDC__
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| 14 | # ifndef const
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| 15 | # define const
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| 16 | # endif
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| 17 | #endif
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| 18 |
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| 19 | #ifdef sun
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| 20 | extern int errno, sys_nerr;
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| 21 | extern char *sys_errlist[];
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| 22 |
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| 23 | char *
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| 24 | strerror(e)
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| 25 | int e;
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| 26 | {
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| 27 | static char buf[100];
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| 28 | if (e < 0 || e >= sys_nerr) {
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| 29 | sprintf(buf, "Unknown error %d", e);
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| 30 | return buf;
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| 31 | }
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| 32 | else
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| 33 | return sys_errlist[e];
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| 34 | }
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| 35 | #endif
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| 36 |
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| 37 | #ifdef ultrix
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| 38 | #include <string.h>
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| 39 |
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| 40 | /* strdup
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| 41 | *
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| 42 | * Make a duplicate of a string.
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| 43 | * For systems which lack this function.
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| 44 | */
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| 45 | char *
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| 46 | strdup(str)
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| 47 | const char *str;
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| 48 | {
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| 49 | size_t len;
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| 50 |
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| 51 | if (str == NULL)
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| 52 | return NULL;
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| 53 | len = strlen(str) + 1;
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| 54 | if ((p = malloc(len)) == NULL)
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| 55 | return NULL;
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| 56 |
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| 57 | return memcpy(p, str, len);
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| 58 | }
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| 59 |
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| 60 | #endif
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| 61 |
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| 62 | #if defined(sun) || defined(__hpux) || defined(__sgi)
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| 63 |
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| 64 | int
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| 65 | setenv(name, value, dum)
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| 66 | const char *name;
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| 67 | const char *value;
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| 68 | int dum;
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| 69 | {
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| 70 | register char *p;
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| 71 | int len = strlen(name) + strlen(value) + 2; /* = \0 */
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| 72 | char *ptr = (char*) malloc(len);
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| 73 |
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| 74 | (void) dum;
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| 75 |
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| 76 | if (ptr == NULL)
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| 77 | return -1;
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| 78 |
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| 79 | p = ptr;
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| 80 |
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| 81 | while (*name)
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| 82 | *p++ = *name++;
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| 83 |
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| 84 | *p++ = '=';
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| 85 |
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| 86 | while (*value)
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| 87 | *p++ = *value++;
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| 88 |
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| 89 | *p = '\0';
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| 90 |
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| 91 | len = putenv(ptr);
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| 92 | /* free(ptr); */
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| 93 | return len;
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| 94 | }
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| 95 | #endif
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| 96 |
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| 97 | #ifdef __hpux
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| 98 | #include <sys/types.h>
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| 99 | #include <sys/param.h>
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| 100 | #include <sys/syscall.h>
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| 101 | #include <sys/signal.h>
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| 102 | #include <sys/stat.h>
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| 103 | #include <stdio.h>
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| 104 | #include <dirent.h>
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| 105 | #include <sys/time.h>
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| 106 | #include <time.h>
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| 107 | #include <unistd.h>
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| 108 |
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| 109 |
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| 110 | int
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| 111 | killpg(pid, sig)
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| 112 | int pid, sig;
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| 113 | {
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| 114 | return kill(-pid, sig);
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| 115 | }
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| 116 |
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| 117 | void
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| 118 | srandom(seed)
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| 119 | long seed;
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| 120 | {
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| 121 | srand48(seed);
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| 122 | }
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| 123 |
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| 124 | long
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| 125 | random()
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| 126 | {
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| 127 | return lrand48();
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| 128 | }
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| 129 |
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| 130 | /* turn into bsd signals */
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| 131 | void (*
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| 132 | signal(s, a)) ()
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| 133 | int s;
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| 134 | void (*a)();
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| 135 | {
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| 136 | struct sigvec osv, sv;
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| 137 |
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| 138 | (void) sigvector(s, (struct sigvec *) 0, &osv);
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| 139 | sv = osv;
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| 140 | sv.sv_handler = a;
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| 141 | #ifdef SV_BSDSIG
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| 142 | sv.sv_flags = SV_BSDSIG;
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| 143 | #endif
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| 144 |
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| 145 | if (sigvector(s, &sv, (struct sigvec *) 0) == -1)
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| 146 | return (BADSIG);
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| 147 | return (osv.sv_handler);
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| 148 | }
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| 149 |
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| 150 | #if !defined(BSD) && !defined(d_fileno)
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| 151 | # define d_fileno d_ino
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| 152 | #endif
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| 153 |
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| 154 | #ifndef DEV_DEV_COMPARE
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| 155 | # define DEV_DEV_COMPARE(a, b) ((a) == (b))
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| 156 | #endif
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| 157 |
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| 158 | /* strrcpy():
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| 159 | * Like strcpy, going backwards and returning the new pointer
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| 160 | */
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| 161 | static char *
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| 162 | strrcpy(ptr, str)
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| 163 | register char *ptr, *str;
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| 164 | {
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| 165 | register int len = strlen(str);
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| 166 |
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| 167 | while (len)
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| 168 | *--ptr = str[--len];
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| 169 |
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| 170 | return (ptr);
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| 171 | } /* end strrcpy */
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| 172 |
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| 173 |
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| 174 | char *
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| 175 | getwd(pathname)
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| 176 | char *pathname;
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| 177 | {
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| 178 | DIR *dp;
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| 179 | struct dirent *d;
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| 180 |
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| 181 | struct stat st_root, st_cur, st_next, st_dotdot;
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| 182 | char pathbuf[MAXPATHLEN], nextpathbuf[MAXPATHLEN * 2];
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| 183 | char *pathptr, *nextpathptr, *cur_name_add;
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| 184 |
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| 185 | /* find the inode of root */
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| 186 | if (stat("/", &st_root) == -1) {
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| 187 | (void) sprintf(pathname,
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| 188 | "getwd: Cannot stat \"/\" (%s)", strerror(errno));
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| 189 | return (NULL);
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| 190 | }
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| 191 | pathbuf[MAXPATHLEN - 1] = '\0';
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| 192 | pathptr = &pathbuf[MAXPATHLEN - 1];
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| 193 | nextpathbuf[MAXPATHLEN - 1] = '\0';
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| 194 | cur_name_add = nextpathptr = &nextpathbuf[MAXPATHLEN - 1];
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| 195 |
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| 196 | /* find the inode of the current directory */
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| 197 | if (lstat(".", &st_cur) == -1) {
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| 198 | (void) sprintf(pathname,
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| 199 | "getwd: Cannot stat \".\" (%s)", strerror(errno));
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| 200 | return (NULL);
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| 201 | }
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| 202 | nextpathptr = strrcpy(nextpathptr, "../");
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| 203 |
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| 204 | /* Descend to root */
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| 205 | for (;;) {
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| 206 |
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| 207 | /* look if we found root yet */
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| 208 | if (st_cur.st_ino == st_root.st_ino &&
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| 209 | DEV_DEV_COMPARE(st_cur.st_dev, st_root.st_dev)) {
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| 210 | (void) strcpy(pathname, *pathptr != '/' ? "/" : pathptr);
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| 211 | return (pathname);
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| 212 | }
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| 213 |
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| 214 | /* open the parent directory */
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| 215 | if (stat(nextpathptr, &st_dotdot) == -1) {
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| 216 | snprintf(pathname, sizeof(pathname),
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| 217 | "getwd: Cannot stat directory \"%s\" (%s)",
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| 218 | nextpathptr, strerror(errno));
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| 219 | return (NULL);
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| 220 | }
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| 221 | if ((dp = opendir(nextpathptr)) == NULL) {
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| 222 | snprintf(pathname, sizeof(pathname),
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| 223 | "getwd: Cannot open directory \"%s\" (%s)",
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| 224 | nextpathptr, strerror(errno));
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| 225 | return (NULL);
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| 226 | }
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| 227 |
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| 228 | /* look in the parent for the entry with the same inode */
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| 229 | if (DEV_DEV_COMPARE(st_dotdot.st_dev, st_cur.st_dev)) {
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| 230 | /* Parent has same device. No need to stat every member */
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| 231 | for (d = readdir(dp); d != NULL; d = readdir(dp))
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| 232 | if (d->d_fileno == st_cur.st_ino)
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| 233 | break;
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| 234 | }
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| 235 | else {
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| 236 | /*
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| 237 | * Parent has a different device. This is a mount point so we
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| 238 | * need to stat every member
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| 239 | */
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| 240 | for (d = readdir(dp); d != NULL; d = readdir(dp)) {
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| 241 | if (ISDOT(d->d_name) || ISDOTDOT(d->d_name))
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| 242 | continue;
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| 243 | (void) strcpy(cur_name_add, d->d_name);
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| 244 | if (lstat(nextpathptr, &st_next) == -1) {
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| 245 | snprintf(pathname, sizeof(pathname), "getwd: Cannot stat \"%s\" (%s)",
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| 246 | d->d_name, strerror(errno));
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| 247 | (void) closedir(dp);
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| 248 | return (NULL);
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| 249 | }
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| 250 | /* check if we found it yet */
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| 251 | if (st_next.st_ino == st_cur.st_ino &&
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| 252 | DEV_DEV_COMPARE(st_next.st_dev, st_cur.st_dev))
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| 253 | break;
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| 254 | }
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| 255 | }
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| 256 | if (d == NULL) {
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| 257 | (void) sprintf(pathname, "getwd: Cannot find \".\" in \"..\"");
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| 258 | (void) closedir(dp);
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| 259 | return (NULL);
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| 260 | }
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| 261 | st_cur = st_dotdot;
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| 262 | pathptr = strrcpy(pathptr, d->d_name);
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| 263 | pathptr = strrcpy(pathptr, "/");
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| 264 | nextpathptr = strrcpy(nextpathptr, "../");
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| 265 | (void) closedir(dp);
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| 266 | *cur_name_add = '\0';
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| 267 | }
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| 268 | } /* end getwd */
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| 269 |
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| 270 |
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| 271 | char *sys_siglist[] = {
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| 272 | "Signal 0",
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| 273 | "Hangup", /* SIGHUP */
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| 274 | "Interrupt", /* SIGINT */
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| 275 | "Quit", /* SIGQUIT */
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| 276 | "Illegal instruction", /* SIGILL */
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| 277 | "Trace/BPT trap", /* SIGTRAP */
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| 278 | "IOT trap", /* SIGIOT */
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| 279 | "EMT trap", /* SIGEMT */
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| 280 | "Floating point exception", /* SIGFPE */
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| 281 | "Killed", /* SIGKILL */
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| 282 | "Bus error", /* SIGBUS */
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| 283 | "Segmentation fault", /* SIGSEGV */
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| 284 | "Bad system call", /* SIGSYS */
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| 285 | "Broken pipe", /* SIGPIPE */
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| 286 | "Alarm clock", /* SIGALRM */
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| 287 | "Terminated", /* SIGTERM */
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| 288 | "User defined signal 1", /* SIGUSR1 */
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| 289 | "User defined signal 2", /* SIGUSR2 */
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| 290 | "Child exited", /* SIGCLD */
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| 291 | "Power-fail restart", /* SIGPWR */
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| 292 | "Virtual timer expired", /* SIGVTALRM */
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| 293 | "Profiling timer expired", /* SIGPROF */
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| 294 | "I/O possible", /* SIGIO */
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| 295 | "Window size changes", /* SIGWINDOW */
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| 296 | "Stopped (signal)", /* SIGSTOP */
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| 297 | "Stopped", /* SIGTSTP */
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| 298 | "Continued", /* SIGCONT */
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| 299 | "Stopped (tty input)", /* SIGTTIN */
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| 300 | "Stopped (tty output)", /* SIGTTOU */
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| 301 | "Urgent I/O condition", /* SIGURG */
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| 302 | "Remote lock lost (NFS)", /* SIGLOST */
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| 303 | "Signal 31", /* reserved */
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| 304 | "DIL signal" /* SIGDIL */
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| 305 | };
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| 306 |
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| 307 | int
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| 308 | utimes(file, tvp)
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| 309 | char *file;
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| 310 | struct timeval tvp[2];
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| 311 | {
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| 312 | struct utimbuf t;
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| 313 |
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| 314 | t.actime = tvp[0].tv_sec;
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| 315 | t.modtime = tvp[1].tv_sec;
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| 316 | return(utime(file, &t));
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| 317 | }
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| 318 |
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| 319 |
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| 320 | #endif /* __hpux */
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| 321 |
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| 322 | #if defined(sun) && defined(__svr4__)
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| 323 | #include <signal.h>
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| 324 |
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| 325 | /* turn into bsd signals */
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| 326 | void (*
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| 327 | signal(s, a)) ()
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| 328 | int s;
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| 329 | void (*a)();
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| 330 | {
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| 331 | struct sigaction sa, osa;
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| 332 |
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| 333 | sa.sa_handler = a;
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| 334 | sigemptyset(&sa.sa_mask);
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| 335 | sa.sa_flags = SA_RESTART;
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| 336 |
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| 337 | if (sigaction(s, &sa, &osa) == -1)
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| 338 | return SIG_ERR;
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| 339 | else
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| 340 | return osa.sa_handler;
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| 341 | }
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| 342 |
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| 343 | #endif
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