/* $OpenBSD: missing.c,v 1.4 1999/06/15 01:18:35 millert Exp $ */ /* * Routines which may be missing on some machines */ #include "sh.h" #include "ksh_stat.h" #include "ksh_dir.h" #ifndef HAVE_MEMSET void * memset(d, c, n) void *d; int c; size_t n; { unsigned char *p = (unsigned char *) d; /* Not amazingly fast.. */ for (; n > 0; --n) *p++ = c; return d; } #endif /* !HAVE_MEMSET */ #if !defined(HAVE_MEMMOVE) && !defined(HAVE_BCOPY) void * memmove(d, s, n) void *d; const void *s; size_t n; { char *dp = (char *) d, *sp = (char *) s; if (n <= 0) ; else if (dp < sp) do *dp++ = *sp++; while (--n > 0); else if (dp > sp) { dp += n; sp += n; do *--dp = *--sp; while (--n > 0); } return d; } #endif /* !HAVE_MEMMOVE && !HAVE_BCOPY */ #ifndef HAVE_STRCASECMP /* * Case insensitive string compare routines, same semantics as str[n]cmp() * (assumes ASCII..). */ static const char ichars[256] = { 0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff }; int strcasecmp(s1, s2) const char *s1; const char *s2; { const unsigned char *us1 = (const unsigned char *) s1; const unsigned char *us2 = (const unsigned char *) s2; while (ichars[*us1] == ichars[*us2++]) if (!*us1++) return 0; return ichars[*us1] - ichars[*--us2]; } int strncasecmp(s1, s2, n) const char *s1; const char *s2; int n; { const unsigned char *us1 = (const unsigned char *) s1; const unsigned char *us2 = (const unsigned char *) s2; while (--n >= 0 && ichars[*us1] == ichars[*us2++]) if (!*us1++) return 0; return n < 0 ? 0 : ichars[*us1] - ichars[*--us2]; } #endif /* HAVE_STRCASECMP */ #ifndef HAVE_STRSTR char * strstr(s, p) const char *s; const char *p; { int len; if (s && p) for (len = strlen(p); *s; s++) if (*s == *p && strncmp(s, p, len) == 0) return (char *) s; return 0; } #endif /* HAVE_STRSTR */ #ifndef HAVE_STRERROR char * strerror(err) int err; { static char buf[64]; # ifdef HAVE_SYS_ERRLIST # ifndef SYS_ERRLIST_DECLARED extern int sys_nerr; extern char *sys_errlist[]; # endif char *p; if (err < 0 || err >= sys_nerr) shf_snprintf(p = buf, sizeof(buf), "Unknown system error %d", err); else p = sys_errlist[err]; return p; # else /* HAVE_SYS_ERRLIST */ switch (err) { case EINVAL: return "Invalid argument"; case EACCES: return "Permission denied"; case ESRCH: return "No such process"; case EPERM: return "Not owner"; case ENOENT: return "No such file or directory"; case ENOTDIR: return "Not a directory"; case ENOEXEC: return "Exec format error"; case ENOMEM: return "Not enough memory"; case E2BIG: return "Argument list too long"; default: shf_snprintf(buf, sizeof(buf), "Unknown system error %d", err); return buf; } # endif /* HAVE_SYS_ERRLIST */ } #endif /* !HAVE_STRERROR */ #ifdef TIMES_BROKEN # include "ksh_time.h" # include "ksh_times.h" # ifdef HAVE_GETRUSAGE # include # else /* HAVE_GETRUSAGE */ # include # endif /* HAVE_GETRUSAGE */ clock_t ksh_times(tms) struct tms *tms; { static clock_t base_sec; clock_t rv; # ifdef HAVE_GETRUSAGE { struct timeval tv; struct rusage ru; getrusage(RUSAGE_SELF, &ru); tms->tms_utime = ru.ru_utime.tv_sec * CLK_TCK + ru.ru_utime.tv_usec * CLK_TCK / 1000000; tms->tms_stime = ru.ru_stime.tv_sec * CLK_TCK + ru.ru_stime.tv_usec * CLK_TCK / 1000000; getrusage(RUSAGE_CHILDREN, &ru); tms->tms_cutime = ru.ru_utime.tv_sec * CLK_TCK + ru.ru_utime.tv_usec * CLK_TCK / 1000000; tms->tms_cstime = ru.ru_stime.tv_sec * CLK_TCK + ru.ru_stime.tv_usec * CLK_TCK / 1000000; gettimeofday(&tv, (struct timezone *) 0); if (base_sec == 0) base_sec = tv.tv_sec; rv = (tv.tv_sec - base_sec) * CLK_TCK; rv += tv.tv_usec * CLK_TCK / 1000000; } # else /* HAVE_GETRUSAGE */ /* Assume times() available, but always returns 0 * (also assumes ftime() available) */ { struct timeb tb; if (times(tms) == (clock_t) -1) return (clock_t) -1; ftime(&tb); if (base_sec == 0) base_sec = tb.time; rv = (tb.time - base_sec) * CLK_TCK; rv += tb.millitm * CLK_TCK / 1000; } # endif /* HAVE_GETRUSAGE */ return rv; } #endif /* TIMES_BROKEN */ #ifdef OPENDIR_DOES_NONDIR /* Prevent opendir() from attempting to open non-directories. Such * behavior can cause problems if it attempts to open special devices... */ DIR * ksh_opendir(d) const char *d; { struct stat statb; if (stat(d, &statb) != 0) return (DIR *) 0; if (!S_ISDIR(statb.st_mode)) { errno = ENOTDIR; return (DIR *) 0; } return opendir(d); } #endif /* OPENDIR_DOES_NONDIR */ #ifndef HAVE_DUP2 int dup2(oldd, newd) int oldd; int newd; { int old_errno; if (fcntl(oldd, F_GETFL, 0) == -1) return -1; /* errno == EBADF */ if (oldd == newd) return newd; old_errno = errno; close(newd); /* in case its open */ errno = old_errno; return fcntl(oldd, F_DUPFD, newd); } #endif /* !HAVE_MEMSET */