55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
#include "defs.h"
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#define MS_MGC_VAL 0xc0ed0000 /* old magic mount flag number */
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#define MS_MGC_MSK 0xffff0000 /* old magic mount flag mask */
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#include "xlat/mount_flags.h"
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SYS_FUNC(mount)
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{
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bool ignore_type = false;
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bool ignore_data = false;
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bool old_magic = false;
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unsigned long flags = tcp->u_arg[3];
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/* Discard magic */
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if ((flags & MS_MGC_MSK) == MS_MGC_VAL) {
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flags &= ~MS_MGC_MSK;
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old_magic = true;
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}
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if (flags & MS_REMOUNT)
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ignore_type = true;
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else if (flags & (MS_BIND | MS_MOVE | MS_SHARED
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| MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
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ignore_type = ignore_data = true;
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printpath(tcp, tcp->u_arg[0]);
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tprints(", ");
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printpath(tcp, tcp->u_arg[1]);
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tprints(", ");
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if (ignore_type)
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printaddr(tcp->u_arg[2]);
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else
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printstr(tcp, tcp->u_arg[2], -1);
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tprints(", ");
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if (old_magic) {
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tprints("MS_MGC_VAL");
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if (flags)
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tprints("|");
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}
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if (flags || !old_magic)
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printflags(mount_flags, flags, "MS_???");
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tprints(", ");
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if (ignore_data)
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printaddr(tcp->u_arg[4]);
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else
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printstr(tcp, tcp->u_arg[4], -1);
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return RVAL_DECODED;
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}
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