mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-14 10:09:48 +00:00
620 lines
13 KiB
C
620 lines
13 KiB
C
/* $NetBSD: util.c,v 1.53 2012/06/04 22:45:05 sjg Exp $ */
|
|
|
|
/*
|
|
* Missing stuff from OS's
|
|
*
|
|
* $Id: util.c,v 1.32 2012/06/06 20:08:44 sjg Exp $
|
|
*/
|
|
|
|
#include "make.h"
|
|
|
|
#ifndef MAKE_NATIVE
|
|
static char rcsid[] = "$NetBSD: util.c,v 1.53 2012/06/04 22:45:05 sjg Exp $";
|
|
#else
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: util.c,v 1.53 2012/06/04 22:45:05 sjg Exp $");
|
|
#endif
|
|
#endif
|
|
|
|
#include <errno.h>
|
|
#include <time.h>
|
|
#include <signal.h>
|
|
|
|
#if !defined(HAVE_STRERROR)
|
|
extern int errno, sys_nerr;
|
|
extern char *sys_errlist[];
|
|
|
|
char *
|
|
strerror(int e)
|
|
{
|
|
static char buf[100];
|
|
if (e < 0 || e >= sys_nerr) {
|
|
snprintf(buf, sizeof(buf), "Unknown error %d", e);
|
|
return buf;
|
|
}
|
|
else
|
|
return sys_errlist[e];
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_GETENV) || !defined(HAVE_SETENV) || !defined(HAVE_UNSETENV)
|
|
extern char **environ;
|
|
|
|
static char *
|
|
findenv(const char *name, int *offset)
|
|
{
|
|
size_t i, len;
|
|
char *p, *q;
|
|
|
|
len = strlen(name);
|
|
for (i = 0; (q = environ[i]); i++) {
|
|
p = strchr(q, '=');
|
|
if (p == NULL || p - q != len)
|
|
continue;
|
|
if (strncmp(name, q, len) == 0) {
|
|
*offset = i;
|
|
return q + len + 1;
|
|
}
|
|
}
|
|
*offset = i;
|
|
return NULL;
|
|
}
|
|
|
|
char *
|
|
getenv(const char *name)
|
|
{
|
|
int offset;
|
|
|
|
return(findenv(name, &offset));
|
|
}
|
|
|
|
int
|
|
unsetenv(const char *name)
|
|
{
|
|
char **p;
|
|
int offset;
|
|
|
|
if (name == NULL || *name == '\0' || strchr(name, '=') != NULL) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
while (findenv(name, &offset)) { /* if set multiple times */
|
|
for (p = &environ[offset];; ++p)
|
|
if (!(*p = *(p + 1)))
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
setenv(const char *name, const char *value, int rewrite)
|
|
{
|
|
char *c, **newenv;
|
|
const char *cc;
|
|
size_t l_value, size;
|
|
int offset;
|
|
|
|
if (name == NULL || value == NULL) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
if (*value == '=') /* no `=' in value */
|
|
++value;
|
|
l_value = strlen(value);
|
|
|
|
/* find if already exists */
|
|
if ((c = findenv(name, &offset))) {
|
|
if (!rewrite)
|
|
return 0;
|
|
if (strlen(c) >= l_value) /* old larger; copy over */
|
|
goto copy;
|
|
} else { /* create new slot */
|
|
size = sizeof(char *) * (offset + 2);
|
|
if (savedEnv == environ) { /* just increase size */
|
|
if ((newenv = realloc(savedEnv, size)) == NULL)
|
|
return -1;
|
|
savedEnv = newenv;
|
|
} else { /* get new space */
|
|
/*
|
|
* We don't free here because we don't know if
|
|
* the first allocation is valid on all OS's
|
|
*/
|
|
if ((savedEnv = malloc(size)) == NULL)
|
|
return -1;
|
|
(void)memcpy(savedEnv, environ, size - sizeof(char *));
|
|
}
|
|
environ = savedEnv;
|
|
environ[offset + 1] = NULL;
|
|
}
|
|
for (cc = name; *cc && *cc != '='; ++cc) /* no `=' in name */
|
|
continue;
|
|
size = cc - name;
|
|
/* name + `=' + value */
|
|
if ((environ[offset] = malloc(size + l_value + 2)) == NULL)
|
|
return -1;
|
|
c = environ[offset];
|
|
(void)memcpy(c, name, size);
|
|
c += size;
|
|
*c++ = '=';
|
|
copy:
|
|
(void)memcpy(c, value, l_value + 1);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef TEST
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
setenv(argv[1], argv[2], 0);
|
|
printf("%s\n", getenv(argv[1]));
|
|
unsetenv(argv[1]);
|
|
printf("%s\n", getenv(argv[1]));
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
#if defined(__hpux__) || defined(__hpux)
|
|
/* strrcpy():
|
|
* Like strcpy, going backwards and returning the new pointer
|
|
*/
|
|
static char *
|
|
strrcpy(char *ptr, char *str)
|
|
{
|
|
int len = strlen(str);
|
|
|
|
while (len)
|
|
*--ptr = str[--len];
|
|
|
|
return (ptr);
|
|
} /* end strrcpy */
|
|
|
|
|
|
char *sys_siglist[] = {
|
|
"Signal 0",
|
|
"Hangup", /* SIGHUP */
|
|
"Interrupt", /* SIGINT */
|
|
"Quit", /* SIGQUIT */
|
|
"Illegal instruction", /* SIGILL */
|
|
"Trace/BPT trap", /* SIGTRAP */
|
|
"IOT trap", /* SIGIOT */
|
|
"EMT trap", /* SIGEMT */
|
|
"Floating point exception", /* SIGFPE */
|
|
"Killed", /* SIGKILL */
|
|
"Bus error", /* SIGBUS */
|
|
"Segmentation fault", /* SIGSEGV */
|
|
"Bad system call", /* SIGSYS */
|
|
"Broken pipe", /* SIGPIPE */
|
|
"Alarm clock", /* SIGALRM */
|
|
"Terminated", /* SIGTERM */
|
|
"User defined signal 1", /* SIGUSR1 */
|
|
"User defined signal 2", /* SIGUSR2 */
|
|
"Child exited", /* SIGCLD */
|
|
"Power-fail restart", /* SIGPWR */
|
|
"Virtual timer expired", /* SIGVTALRM */
|
|
"Profiling timer expired", /* SIGPROF */
|
|
"I/O possible", /* SIGIO */
|
|
"Window size changes", /* SIGWINDOW */
|
|
"Stopped (signal)", /* SIGSTOP */
|
|
"Stopped", /* SIGTSTP */
|
|
"Continued", /* SIGCONT */
|
|
"Stopped (tty input)", /* SIGTTIN */
|
|
"Stopped (tty output)", /* SIGTTOU */
|
|
"Urgent I/O condition", /* SIGURG */
|
|
"Remote lock lost (NFS)", /* SIGLOST */
|
|
"Signal 31", /* reserved */
|
|
"DIL signal" /* SIGDIL */
|
|
};
|
|
#endif /* __hpux__ || __hpux */
|
|
|
|
#if defined(__hpux__) || defined(__hpux)
|
|
#include <sys/types.h>
|
|
#include <sys/syscall.h>
|
|
#include <sys/signal.h>
|
|
#include <sys/stat.h>
|
|
#include <dirent.h>
|
|
#include <sys/time.h>
|
|
#include <unistd.h>
|
|
|
|
int
|
|
killpg(int pid, int sig)
|
|
{
|
|
return kill(-pid, sig);
|
|
}
|
|
|
|
#if !defined(__hpux__) && !defined(__hpux)
|
|
void
|
|
srandom(long seed)
|
|
{
|
|
srand48(seed);
|
|
}
|
|
|
|
long
|
|
random(void)
|
|
{
|
|
return lrand48();
|
|
}
|
|
#endif
|
|
|
|
#if !defined(__hpux__) && !defined(__hpux)
|
|
int
|
|
utimes(char *file, struct timeval tvp[2])
|
|
{
|
|
struct utimbuf t;
|
|
|
|
t.actime = tvp[0].tv_sec;
|
|
t.modtime = tvp[1].tv_sec;
|
|
return(utime(file, &t));
|
|
}
|
|
#endif
|
|
|
|
#if !defined(BSD) && !defined(d_fileno)
|
|
# define d_fileno d_ino
|
|
#endif
|
|
|
|
#ifndef DEV_DEV_COMPARE
|
|
# define DEV_DEV_COMPARE(a, b) ((a) == (b))
|
|
#endif
|
|
#define ISDOT(c) ((c)[0] == '.' && (((c)[1] == '\0') || ((c)[1] == '/')))
|
|
#define ISDOTDOT(c) ((c)[0] == '.' && ISDOT(&((c)[1])))
|
|
|
|
char *
|
|
getwd(char *pathname)
|
|
{
|
|
DIR *dp;
|
|
struct dirent *d;
|
|
extern int errno;
|
|
|
|
struct stat st_root, st_cur, st_next, st_dotdot;
|
|
char pathbuf[MAXPATHLEN], nextpathbuf[MAXPATHLEN * 2];
|
|
char *pathptr, *nextpathptr, *cur_name_add;
|
|
|
|
/* find the inode of root */
|
|
if (stat("/", &st_root) == -1) {
|
|
(void)sprintf(pathname,
|
|
"getwd: Cannot stat \"/\" (%s)", strerror(errno));
|
|
return NULL;
|
|
}
|
|
pathbuf[MAXPATHLEN - 1] = '\0';
|
|
pathptr = &pathbuf[MAXPATHLEN - 1];
|
|
nextpathbuf[MAXPATHLEN - 1] = '\0';
|
|
cur_name_add = nextpathptr = &nextpathbuf[MAXPATHLEN - 1];
|
|
|
|
/* find the inode of the current directory */
|
|
if (lstat(".", &st_cur) == -1) {
|
|
(void)sprintf(pathname,
|
|
"getwd: Cannot stat \".\" (%s)", strerror(errno));
|
|
return NULL;
|
|
}
|
|
nextpathptr = strrcpy(nextpathptr, "../");
|
|
|
|
/* Descend to root */
|
|
for (;;) {
|
|
|
|
/* look if we found root yet */
|
|
if (st_cur.st_ino == st_root.st_ino &&
|
|
DEV_DEV_COMPARE(st_cur.st_dev, st_root.st_dev)) {
|
|
(void)strcpy(pathname, *pathptr != '/' ? "/" : pathptr);
|
|
return (pathname);
|
|
}
|
|
|
|
/* open the parent directory */
|
|
if (stat(nextpathptr, &st_dotdot) == -1) {
|
|
(void)sprintf(pathname,
|
|
"getwd: Cannot stat directory \"%s\" (%s)",
|
|
nextpathptr, strerror(errno));
|
|
return NULL;
|
|
}
|
|
if ((dp = opendir(nextpathptr)) == NULL) {
|
|
(void)sprintf(pathname,
|
|
"getwd: Cannot open directory \"%s\" (%s)",
|
|
nextpathptr, strerror(errno));
|
|
return NULL;
|
|
}
|
|
|
|
/* look in the parent for the entry with the same inode */
|
|
if (DEV_DEV_COMPARE(st_dotdot.st_dev, st_cur.st_dev)) {
|
|
/* Parent has same device. No need to stat every member */
|
|
for (d = readdir(dp); d != NULL; d = readdir(dp))
|
|
if (d->d_fileno == st_cur.st_ino)
|
|
break;
|
|
}
|
|
else {
|
|
/*
|
|
* Parent has a different device. This is a mount point so we
|
|
* need to stat every member
|
|
*/
|
|
for (d = readdir(dp); d != NULL; d = readdir(dp)) {
|
|
if (ISDOT(d->d_name) || ISDOTDOT(d->d_name))
|
|
continue;
|
|
(void)strcpy(cur_name_add, d->d_name);
|
|
if (lstat(nextpathptr, &st_next) == -1) {
|
|
(void)sprintf(pathname,
|
|
"getwd: Cannot stat \"%s\" (%s)",
|
|
d->d_name, strerror(errno));
|
|
(void)closedir(dp);
|
|
return NULL;
|
|
}
|
|
/* check if we found it yet */
|
|
if (st_next.st_ino == st_cur.st_ino &&
|
|
DEV_DEV_COMPARE(st_next.st_dev, st_cur.st_dev))
|
|
break;
|
|
}
|
|
}
|
|
if (d == NULL) {
|
|
(void)sprintf(pathname,
|
|
"getwd: Cannot find \".\" in \"..\"");
|
|
(void)closedir(dp);
|
|
return NULL;
|
|
}
|
|
st_cur = st_dotdot;
|
|
pathptr = strrcpy(pathptr, d->d_name);
|
|
pathptr = strrcpy(pathptr, "/");
|
|
nextpathptr = strrcpy(nextpathptr, "../");
|
|
(void)closedir(dp);
|
|
*cur_name_add = '\0';
|
|
}
|
|
} /* end getwd */
|
|
|
|
#endif /* __hpux */
|
|
|
|
#if !defined(HAVE_GETCWD)
|
|
char *
|
|
getcwd(path, sz)
|
|
char *path;
|
|
int sz;
|
|
{
|
|
return getwd(path);
|
|
}
|
|
#endif
|
|
|
|
/* force posix signals */
|
|
void (*
|
|
bmake_signal(int s, void (*a)(int)))(int)
|
|
{
|
|
struct sigaction sa, osa;
|
|
|
|
sa.sa_handler = a;
|
|
sigemptyset(&sa.sa_mask);
|
|
sa.sa_flags = SA_RESTART;
|
|
|
|
if (sigaction(s, &sa, &osa) == -1)
|
|
return SIG_ERR;
|
|
else
|
|
return osa.sa_handler;
|
|
}
|
|
|
|
#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_VASPRINTF)
|
|
#include <stdarg.h>
|
|
#endif
|
|
|
|
#if !defined(HAVE_VSNPRINTF)
|
|
#if !defined(__osf__)
|
|
#ifdef _IOSTRG
|
|
#define STRFLAG (_IOSTRG|_IOWRT) /* no _IOWRT: avoid stdio bug */
|
|
#else
|
|
#if 0
|
|
#define STRFLAG (_IOREAD) /* XXX: Assume svr4 stdio */
|
|
#endif
|
|
#endif /* _IOSTRG */
|
|
#endif /* __osf__ */
|
|
|
|
int
|
|
vsnprintf(char *s, size_t n, const char *fmt, va_list args)
|
|
{
|
|
#ifdef STRFLAG
|
|
FILE fakebuf;
|
|
|
|
fakebuf._flag = STRFLAG;
|
|
/*
|
|
* Some os's are char * _ptr, others are unsigned char *_ptr...
|
|
* We cast to void * to make everyone happy.
|
|
*/
|
|
fakebuf._ptr = (void *)s;
|
|
fakebuf._cnt = n-1;
|
|
fakebuf._file = -1;
|
|
_doprnt(fmt, args, &fakebuf);
|
|
fakebuf._cnt++;
|
|
putc('\0', &fakebuf);
|
|
if (fakebuf._cnt<0)
|
|
fakebuf._cnt = 0;
|
|
return (n-fakebuf._cnt-1);
|
|
#else
|
|
#ifndef _PATH_DEVNULL
|
|
# define _PATH_DEVNULL "/dev/null"
|
|
#endif
|
|
/*
|
|
* Rats... we don't want to clobber anything...
|
|
* do a printf to /dev/null to see how much space we need.
|
|
*/
|
|
static FILE *nullfp;
|
|
int need = 0; /* XXX what's a useful error return? */
|
|
|
|
if (!nullfp)
|
|
nullfp = fopen(_PATH_DEVNULL, "w");
|
|
if (nullfp) {
|
|
need = vfprintf(nullfp, fmt, args);
|
|
if (need < n)
|
|
(void)vsprintf(s, fmt, args);
|
|
}
|
|
return need;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_SNPRINTF)
|
|
int
|
|
snprintf(char *s, size_t n, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
int rv;
|
|
|
|
va_start(ap, fmt);
|
|
rv = vsnprintf(s, n, fmt, ap);
|
|
va_end(ap);
|
|
return rv;
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_STRFTIME)
|
|
size_t
|
|
strftime(char *buf, size_t len, const char *fmt, const struct tm *tm)
|
|
{
|
|
static char months[][4] = {
|
|
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
|
|
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
|
|
};
|
|
|
|
size_t s;
|
|
char *b = buf;
|
|
|
|
while (*fmt) {
|
|
if (len == 0)
|
|
return buf - b;
|
|
if (*fmt != '%') {
|
|
*buf++ = *fmt++;
|
|
len--;
|
|
continue;
|
|
}
|
|
switch (*fmt++) {
|
|
case '%':
|
|
*buf++ = '%';
|
|
len--;
|
|
if (len == 0) return buf - b;
|
|
/*FALLTHROUGH*/
|
|
case '\0':
|
|
*buf = '%';
|
|
s = 1;
|
|
break;
|
|
case 'k':
|
|
s = snprintf(buf, len, "%d", tm->tm_hour);
|
|
break;
|
|
case 'M':
|
|
s = snprintf(buf, len, "%02d", tm->tm_min);
|
|
break;
|
|
case 'S':
|
|
s = snprintf(buf, len, "%02d", tm->tm_sec);
|
|
break;
|
|
case 'b':
|
|
if (tm->tm_mon >= 12)
|
|
return buf - b;
|
|
s = snprintf(buf, len, "%s", months[tm->tm_mon]);
|
|
break;
|
|
case 'd':
|
|
s = snprintf(buf, len, "%02d", tm->tm_mday);
|
|
break;
|
|
case 'Y':
|
|
s = snprintf(buf, len, "%d", 1900 + tm->tm_year);
|
|
break;
|
|
default:
|
|
s = snprintf(buf, len, "Unsupported format %c",
|
|
fmt[-1]);
|
|
break;
|
|
}
|
|
buf += s;
|
|
len -= s;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_KILLPG)
|
|
#if !defined(__hpux__) && !defined(__hpux)
|
|
int
|
|
killpg(int pid, int sig)
|
|
{
|
|
return kill(-pid, sig);
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
#if !defined(HAVE_WARNX)
|
|
static void
|
|
vwarnx(const char *fmt, va_list args)
|
|
{
|
|
fprintf(stderr, "%s: ", progname);
|
|
if ((fmt)) {
|
|
vfprintf(stderr, fmt, args);
|
|
fprintf(stderr, ": ");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_WARN)
|
|
static void
|
|
vwarn(const char *fmt, va_list args)
|
|
{
|
|
vwarnx(fmt, args);
|
|
fprintf(stderr, "%s\n", strerror(errno));
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_ERR)
|
|
static void
|
|
verr(int eval, const char *fmt, va_list args)
|
|
{
|
|
vwarn(fmt, args);
|
|
exit(eval);
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_ERRX)
|
|
static void
|
|
verrx(int eval, const char *fmt, va_list args)
|
|
{
|
|
vwarnx(fmt, args);
|
|
exit(eval);
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_ERR)
|
|
void
|
|
err(int eval, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
verr(eval, fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_ERRX)
|
|
void
|
|
errx(int eval, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
verrx(eval, fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_WARN)
|
|
void
|
|
warn(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
vwarn(fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
#endif
|
|
|
|
#if !defined(HAVE_WARNX)
|
|
void
|
|
warnx(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
vwarnx(fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
#endif
|