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support dæmonisation in mksh, for example

Browse Source 
|	csh -cf '/command/svscanboot &'
and
|	/usr/mpkg/bin/pgrphack /usr/mpkg/bin/svscanboot &
can now be replaced with
|	/bin/mksh -T- /usr/mpkg/bin/svscanboot
This commit is contained in:
tg
2008-03-23 22:09:59 +00:00
parent 38a53603d3
commit 83b8798da3
4 changed files with 36 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
misc.c
View File

@ -6,7 +6,7 @@
#include <grp.h>
#endif
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.68 2008/02/27 01:00:09 tg Exp $\t"
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.69 2008/03/23 22:09:58 tg Exp $\t"
MKSH_SH_H_ID);
#undef USE_CHVT
@ -1337,28 +1337,32 @@ chvt(const char *fn)
struct stat sb;
int fd;
if (stat(fn, &sb)) {
memcpy(dv, "/dev/ttyC", 9);
strlcpy(dv + 9, fn, 20 - 9);
if (stat(dv, &sb)) {
strlcpy(dv + 8, fn, 20 - 8);
if (stat(dv, &sb))
errorf("chvt: can't find tty %s", fn);
if (*fn == '-') {
memcpy(dv, "-/dev/null", sizeof ("-/dev/null"));
fn = dv + 1;
} else {
if (stat(fn, &sb)) {
memcpy(dv, "/dev/ttyC", 9);
strlcpy(dv + 9, fn, 20 - 9);
if (stat(dv, &sb)) {
strlcpy(dv + 8, fn, 20 - 8);
if (stat(dv, &sb))
errorf("chvt: can't find tty %s", fn);
}
fn = dv;
}
fn = dv;
}
if (!(sb.st_mode & S_IFCHR))
errorf("chvt: not a char device: %s", fn);
if ((sb.st_uid != 0) && chown(fn, 0, 0))
warningf(false, "chvt: cannot chown root %s", fn);
if (((sb.st_mode & 07777) != 0600) && chmod(fn, 0600))
warningf(false, "chvt: cannot chmod 0600 %s", fn);
if (!(sb.st_mode & S_IFCHR))
errorf("chvt: not a char device: %s", fn);
if ((sb.st_uid != 0) && chown(fn, 0, 0))
warningf(false, "chvt: cannot chown root %s", fn);
if (((sb.st_mode & 07777) != 0600) && chmod(fn, 0600))
warningf(false, "chvt: cannot chmod 0600 %s", fn);
#if HAVE_REVOKE
if (revoke(fn))
if (revoke(fn))
#endif
warningf(false, "chvt: cannot revoke %s, new shell is"
" potentially insecure", fn);
warningf(false, "chvt: cannot revoke %s, new shell is"
" potentially insecure", fn);
}
if ((fd = open(fn, O_RDWR)) == -1) {
sleep(1);
if ((fd = open(fn, O_RDWR)) == -1)
@ -1374,7 +1378,7 @@ chvt(const char *fn)
}
if (setsid() == -1)
errorf("chvt: setsid failed");
if (ioctl(fd, TIOCSCTTY, NULL) == -1)
if ((fn != dv + 1) && ioctl(fd, TIOCSCTTY, NULL) == -1)
errorf("chvt: TIOCSCTTY failed");
dup2(fd, 0);
dup2(fd, 1);