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svr4 emulator will refuse to unload itself if it is currently in use.

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This commit is contained in:
Mark Newton 1999-02-04 12:43:17 +00:00
parent 096977fae7
commit 0f1110bb5f
2 changed files with 16 additions and 16 deletions
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16
sys/compat/svr4/svr4_sysvec.c
View File

@ -356,16 +356,16 @@ svr4_elf_modevent(module_t mod, int type, void *data)
printf("svr4 ELF exec handler installed\n");
break;
case MOD_UNLOAD:
/* XXX There needs to be a generic function that any
* emulator can call to say, "Are any currently-running
* executables using me?" so we can fail to unload the
* module if it's in use. Locking up because you forgot
* to shut down a program prior to a kldunload isn't fun.
*/
if (elf_remove_brand_entry(&svr4_brand) < 0)
/* Only allow the emulator to be removed if it isn't in use. */
if (elf_brand_inuse(&svr4_brand) != 0) {
error = EBUSY;
} else if (elf_remove_brand_entry(&svr4_brand) < 0) {
error = EINVAL;
}
if (error)
printf("Could not deinstall ELF interpreter entry\n");
printf("Could not deinstall ELF interpreter entry (error %d)\n",
error);
else if (bootverbose)
printf("svr4 ELF exec handler removed\n");
break;

16
sys/svr4/svr4_sysvec.c
View File

@ -356,16 +356,16 @@ svr4_elf_modevent(module_t mod, int type, void *data)
printf("svr4 ELF exec handler installed\n");
break;
case MOD_UNLOAD:
/* XXX There needs to be a generic function that any
* emulator can call to say, "Are any currently-running
* executables using me?" so we can fail to unload the
* module if it's in use. Locking up because you forgot
* to shut down a program prior to a kldunload isn't fun.
*/
if (elf_remove_brand_entry(&svr4_brand) < 0)
/* Only allow the emulator to be removed if it isn't in use. */
if (elf_brand_inuse(&svr4_brand) != 0) {
error = EBUSY;
} else if (elf_remove_brand_entry(&svr4_brand) < 0) {
error = EINVAL;
}
if (error)
printf("Could not deinstall ELF interpreter entry\n");
printf("Could not deinstall ELF interpreter entry (error %d)\n",
error);
else if (bootverbose)
printf("svr4 ELF exec handler removed\n");
break;