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58 lines
1.5 KiB
58 lines
1.5 KiB
4 months ago
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/* mknod.c - make block or character special file
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*
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* Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
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*
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* http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/mknod.html
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USE_MKNOD(NEWTOY(mknod, "<2>4m(mode):"USE_MKNOD_Z("Z:"), TOYFLAG_BIN|TOYFLAG_UMASK))
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config MKNOD
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bool "mknod"
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default y
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help
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usage: mknod [-m MODE] NAME TYPE [MAJOR MINOR]
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Create a special file NAME with a given type. TYPE is b for block device,
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c or u for character device, p for named pipe (which ignores MAJOR/MINOR).
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-m Mode (file permissions) of new device, in octal or u+x format
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config MKNOD_Z
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bool
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default y
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depends on MKNOD && !TOYBOX_LSM_NONE
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help
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usage: mknod [-Z CONTEXT] ...
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-Z Set security context to created file
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*/
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#define FOR_mknod
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#include "toys.h"
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GLOBALS(
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char *Z, *m;
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)
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void mknod_main(void)
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{
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mode_t modes[] = {S_IFIFO, S_IFCHR, S_IFCHR, S_IFBLK};
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int major=0, minor=0, type;
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int mode = TT.m ? string_to_mode(TT.m, 0777) : 0660;
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type = stridx("pcub", *toys.optargs[1]);
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if (type == -1) perror_exit("bad type '%c'", *toys.optargs[1]);
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if (type) {
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if (toys.optc != 4) perror_exit("need major/minor");
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major = atoi(toys.optargs[2]);
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minor = atoi(toys.optargs[3]);
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}
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if (toys.optflags & FLAG_Z)
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if (-1 == lsm_set_create(TT.Z))
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perror_exit("-Z '%s' failed", TT.Z);
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if (mknod(*toys.optargs, mode|modes[type], dev_makedev(major, minor)))
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perror_exit_raw(*toys.optargs);
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}
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