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If umount2 is not available, stub it out.

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This commit is contained in:
Eric Andersen 2001-03-04 06:07:34 +00:00
parent 9ead68975c
commit 076cdc24fc
1 changed files with 20 additions and 5 deletions
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25
utility.c
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@ -189,18 +189,33 @@ _syscall1(int, sysinfo, struct sysinfo *, info);
#if defined BB_MOUNT || defined BB_UMOUNT
#ifndef __NR_umount2
static const int __NR_umount2 = 52;
#endif
/* Include our own version of <sys/mount.h>, since libc5 doesn't
* know about umount2 */
extern _syscall1(int, umount, const char *, special_file);
extern _syscall2(int, umount2, const char *, special_file, int, flags);
extern _syscall5(int, mount, const char *, special_file, const char *, dir,
const char *, fstype, unsigned long int, rwflag, const void *, data);
#ifndef __NR_umount2
# warning This kernel does not support the umount2 syscall
# warning The umount2 system call is being stubbed out...
int umount2(const char * special_file, int flags)
{
/* BusyBox was compiled against a kernel that did not support
* the umount2 system call. To make this application work,
* you will need to recompile with a kernel supporting the
* umount2 system call.
*/
fprintf(stderr, "\n\nTo make this application work, you will need to recompile\n");
fprintf(stderr, "with a kernel supporting the umount2 system call. -Erik\n\n");
errno=ENOSYS;
return -1;
}
# else
extern _syscall2(int, umount2, const char *, special_file, int, flags);
# endif
#endif
#if defined BB_FEATURE_NEW_MODULE_INTERFACE && ( defined BB_INSMOD || defined BB_LSMOD )
#ifndef __NR_query_module
static const int __NR_query_module = 167;