diff options
Diffstat (limited to 'bin/pdksh/missing.c')
| -rw-r--r-- | bin/pdksh/missing.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/bin/pdksh/missing.c b/bin/pdksh/missing.c new file mode 100644 index 00000000000..455403c0de1 --- /dev/null +++ b/bin/pdksh/missing.c @@ -0,0 +1,271 @@ +/* $OpenBSD: missing.c,v 1.1 1996/08/14 06:19:11 downsj 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 <sys/resource.h> +# else /* HAVE_GETRUSAGE */ +# include <sys/timeb.h> +# 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 */ |