Dmitry V. Levin
6da7ca378d
* mount.c: New file. * Makefile.am (strace_SOURCES): Add it. * system.c: Move sys_mount and related code to mount.c.
73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
#include "defs.h"
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#define MS_RDONLY 1 /* Mount read-only */
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#define MS_NOSUID 2 /* Ignore suid and sgid bits */
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#define MS_NODEV 4 /* Disallow access to device special files */
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#define MS_NOEXEC 8 /* Disallow program execution */
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#define MS_SYNCHRONOUS 16 /* Writes are synced at once */
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#define MS_REMOUNT 32 /* Alter flags of a mounted FS */
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#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */
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#define MS_DIRSYNC 128 /* Directory modifications are synchronous */
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#define MS_NOATIME 1024 /* Do not update access times. */
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#define MS_NODIRATIME 2048 /* Do not update directory access times */
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#define MS_BIND 4096
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#define MS_MOVE 8192
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#define MS_REC 16384
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#define MS_SILENT 32768
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#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
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#define MS_UNBINDABLE (1<<17) /* change to unbindable */
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#define MS_PRIVATE (1<<18) /* change to private */
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#define MS_SLAVE (1<<19) /* change to slave */
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#define MS_SHARED (1<<20) /* change to shared */
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#define MS_RELATIME (1<<21)
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#define MS_KERNMOUNT (1<<22)
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#define MS_I_VERSION (1<<23)
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#define MS_STRICTATIME (1<<24)
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#define MS_NOSEC (1<<28)
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#define MS_BORN (1<<29)
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#define MS_ACTIVE (1<<30)
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#define MS_NOUSER (1<<31)
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#define MS_MGC_VAL 0xc0ed0000 /* Magic flag number */
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#define MS_MGC_MSK 0xffff0000 /* Magic flag mask */
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#include "xlat/mount_flags.h"
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int
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sys_mount(struct tcb *tcp)
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{
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if (entering(tcp)) {
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int ignore_type = 0, ignore_data = 0;
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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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if (flags & MS_REMOUNT)
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ignore_type = 1;
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else if (flags & (MS_BIND | MS_MOVE))
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ignore_type = ignore_data = 1;
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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 && tcp->u_arg[2])
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tprintf("%#lx", 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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printflags(mount_flags, tcp->u_arg[3], "MS_???");
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tprints(", ");
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if (ignore_data && tcp->u_arg[4])
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tprintf("%#lx", tcp->u_arg[4]);
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else
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printstr(tcp, tcp->u_arg[4], -1);
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}
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return 0;
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}
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