summaryrefslogtreecommitdiffstats
path: root/iutil.py
blob: bc663b51dc9dc2ec0b732f2cff74e002cc0552b8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
#
# iutil.py - generic install utility functions
#
# Erik Troan <ewt@redhat.com>
#
# Copyright 1999-2003 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#

import types, os, sys, isys, select, string, stat, signal
import os.path
from rhpl.log import log
from flags import flags

def getArch ():
    arch = os.uname ()[4]
    if (len (arch) == 4 and arch[0] == 'i' and
        arch[2:4] == "86"):
        arch = "i386"

    if arch == "sparc64":
        arch = "sparc"

    if arch == "ppc64":
        arch = "ppc"

    if arch == "s390x":
        arch = "s390"

    return arch

def getfd(filespec, readOnly = 0):
    if type(filespec) == types.IntType:
	return filespec
    if filespec == None:
	filespec = "/dev/null"

    flags = os.O_RDWR | os.O_CREAT
    if (readOnly):
	flags = os.O_RDONLY
    return os.open(filespec, flags)

def execWithRedirect(command, argv, stdin = 0, stdout = 1, stderr = 2,	
		     searchPath = 0, root = '/', newPgrp = 0,
		     ignoreTermSigs = 0):
    stdin = getfd(stdin)
    if stdout == stderr:
	stdout = getfd(stdout)
	stderr = stdout
    else:
	stdout = getfd(stdout)
	stderr = getfd(stderr)

    if not searchPath and not os.access (root + command, os.X_OK):
	raise RuntimeError, command + " can not be run"

    childpid = os.fork()
    if (not childpid):
        if (root and root != '/'): 
	    os.chroot (root)
	    os.chdir("/")

	if ignoreTermSigs:
	    signal.signal(signal.SIGTSTP, signal.SIG_IGN)
	    signal.signal(signal.SIGINT, signal.SIG_IGN)

	if type(stdin) == type("a"):
	    stdin == os.open(stdin, os.O_RDONLY)
	if type(stdout) == type("a"):
	    stdout == os.open(stdout, os.O_RDWR)
	if type(stderr) == type("a"):
	    stderr = os.open(stderr, os.O_RDWR)

	if stdin != 0:
	    os.dup2(stdin, 0)
	    os.close(stdin)
	if stdout != 1:
	    os.dup2(stdout, 1)
	    if stdout != stderr:
		os.close(stdout)
	if stderr != 2:
	    os.dup2(stderr, 2)
	    os.close(stderr)

        try:
            if (searchPath):
                os.execvp(command, argv)
            else:
                os.execv(command, argv)
        except OSError:
            # let the caller deal with the exit code of 1.
            pass

	sys.exit(1)

    if newPgrp:
	os.setpgid(childpid, childpid)
	oldPgrp = os.tcgetpgrp(0)
	os.tcsetpgrp(0, childpid)

    status = -1
    try:
        (pid, status) = os.waitpid(childpid, 0)
    except OSError, (errno, msg):
        print __name__, "waitpid:", msg

    if newPgrp:
	os.tcsetpgrp(0, oldPgrp)

    return status

def execWithCapture(command, argv, searchPath = 0, root = '/', stdin = 0,
		    catchfd = 1, closefd = -1):

    if not os.access (root + command, os.X_OK):
	raise RuntimeError, command + " can not be run"

    (read, write) = os.pipe()

    childpid = os.fork()
    if (not childpid):
        if (root and root != '/'): os.chroot (root)
	os.dup2(write, catchfd)
	os.close(write)
	os.close(read)

	if closefd != -1:
	    os.close(closefd)

	if stdin:
	    os.dup2(stdin, 0)
	    os.close(stdin)

	if (searchPath):
	    os.execvp(command, argv)
	else:
	    os.execv(command, argv)

	sys.exit(1)

    os.close(write)

    rc = ""
    s = "1"
    while (s):
	select.select([read], [], [])
	s = os.read(read, 1000)
	rc = rc + s

    os.close(read)

    try:
        os.waitpid(childpid, 0)
    except OSError, (errno, msg):
        print __name__, "waitpid:", msg

    return rc

def copyFile(source, to, pw = None):
    f = os.open(source, os.O_RDONLY)
    t = os.open(to, os.O_RDWR | os.O_TRUNC | os.O_CREAT)

    if pw:
	(fn, title, text) = pw
	total = os.path.getsize(source)
	win = fn(title, text, total)

    try:
	count = os.read(f, 262144)
	total = 0
	while (count):
	    os.write(t, count)

	    total = total + len(count)
	    if pw:
		win.set(total)
	    count = os.read(f, 16384)
    finally:
	os.close(f)
	os.close(t)

	if pw:
	    win.pop()

# return size of directory (and subdirs) in kilobytes
def getDirSize(dir):
    def getSubdirSize(dir):
	# returns size in bytes
        dsize = 0
        for f in os.listdir(dir):
	    curpath = '%s/%s' % (dir, f)
	    sinfo = os.stat(curpath)
            if stat.S_ISDIR(sinfo[stat.ST_MODE]):
                dsize += getSubdirSize(curpath)
            elif stat.S_ISREG(sinfo[stat.ST_MODE]):
                dsize += sinfo[stat.ST_SIZE]
            else:
                pass

        return dsize
    return getSubdirSize(dir)/1024

# this is in kilobytes - returns amount of RAM not used by /tmp
def memAvailable():
    tram = memInstalled()

    ramused = getDirSize("/tmp")

    return tram - ramused

# this is in kilobytes
def memInstalled():
    if not os.access('/proc/e820info', os.R_OK):
        f = open("/proc/meminfo", "r")
        mem = f.readlines()[1]
        del f

        fields = string.split(mem)
        mem = int(long(fields[1]) / 1024)
    else:
        f = open("/proc/e820info", "r")
        lines = f.readlines()
        mem = 0
        for line in lines:
            fields = string.split(line)
            if fields[3] == "(usable)":
                mem = mem + (string.atol(fields[0], 16) / 1024)

    return int(mem)

# try to keep 2.4 kernel swapper happy!
def swapSuggestion(quiet=0):
    mem = memInstalled()/1024
    mem = ((mem/16)+1)*16
    if not quiet:
	log("Detected %sM of memory", mem)
	
    if mem < 128:
        minswap = 96
        maxswap = 192
    else:
        if mem > 1000:
            minswap = 1000
            maxswap = 2000
        else:
            minswap = mem
            maxswap = 2*mem

    if not quiet:
	log("Swap attempt of %sM to %sM", minswap, maxswap)

    return (minswap, maxswap)

    
# this is a mkdir that won't fail if a directory already exists and will
# happily make all of the directories leading up to it. 
def mkdirChain(dir):
    if (os.path.isdir(dir)): return
    elements = string.splitfields(dir, "/")

    if (len(elements[0])):
	which = 1
	path = elements[0] 
    else:
	which = 2
	path = "/" + elements[1]

    if (not os.path.isdir(path)): 
	os.mkdir(path, 0755)

    while (which < len(elements)):
	path = path + "/" + elements[which]
	which = which + 1
	
	if (not os.path.isdir(path)): 
	    os.mkdir(path, 0755)

def makerelname(relpath, filename):
    if relpath != '':
        return relpath+'/'+filename
    else:
        return filename
    
    
def findtz(basepath, relpath):
    tzdata = []
    for n in os.listdir(basepath+'/'+relpath):
        timezone = makerelname(relpath, n)
        if relpath != '':
            timezone = relpath+'/'+n
        else:
            timezone = n
            
        filestat = os.lstat(basepath+'/'+timezone)
        [filemode] = filestat[:1]
        
        if (not (stat.S_ISLNK(filemode) or
                 stat.S_ISREG(filemode) or
                 stat.S_ISDIR(filemode))):
            continue
        elif n[:1] >= 'A' and n[:1] <= 'Z':
            if stat.S_ISDIR(filemode):
                tzdata.extend(findtz(basepath, timezone))
            else:
                tzdata.append(timezone)

    tzdata.sort()
                            
    return tzdata

def rmrf (path):
    # this is only the very simple case.
    # NOTE THAT THIS IS RACY IF USED ON AN INSTALLED SYSTEM
    # IT IS ONLY SAFE FOR ANACONDA AS A CONTAINED ENVIRONMENT
    if os.path.isdir(path):
        files = os.listdir (path)
    else:
        os.unlink(path)
        return
    for file in files:
        if (not os.path.islink(path + '/' + file) and
            os.path.isdir(path + '/' + file)):
            rmrf (path + '/' + file)
        else:
            os.unlink (path + '/' + file)
    os.rmdir (path)

def validUser (user):
    if not user[0] in string.letters:
        return 0

    for letter in user:
        if (letter == ':'
            or letter == ','
            or letter == '\n'
            or ord (letter) < 33):
            return 0

    return 1

def setClock (root):
    # eeeeew, inline shell. ;)
    args = ("bash", "-c", """
if [ -f /etc/sysconfig/clock ]; then
   . /etc/sysconfig/clock
   
   # convert old style clock config to new values
   if [ "${CLOCKMODE}" = "GMT" ]; then
      UTC=true
   elif [ "${CLOCKMODE}" = "ARC" ]; then
      ARC=true
   fi
fi

CLOCKFLAGS="--hctosys"

case "$UTC" in
   yes|true)
    CLOCKFLAGS="$CLOCKFLAGS -u";
     ;;
esac

case "$ARC" in
     yes|true)
        CLOCKFLAGS="$CLOCKFLAGS -A";
     ;;
esac
case "$SRM" in
     yes|true)
        CLOCKFLAGS="$CLOCKFLAGS -S";
     ;;
esac
/sbin/hwclock $CLOCKFLAGS
""")
    try:
        execWithRedirect('/bin/bash', args, stdin = None,
                         stdout = None, stderr = None,
                         root = root)
    except RuntimeError:
        log("Failed to set clock properly.  Going to try to continue anyway.")

def swapAmount():
    f = open("/proc/meminfo", "r")
    mem = f.readlines()[2]
    del f

    fields = string.split(mem)
    mem = int(long (fields[1]) / 1024)

    return mem
        
def copyDeviceNode(src, dest):
    """Copies the device node at src to dest by looking at the type of device,
    major, and minor of src and doing a new mknod at dest"""

    filestat = os.lstat(src)
    mode = filestat[stat.ST_MODE]
    if stat.S_ISBLK(mode):
        type = stat.S_IFBLK
    elif stat.S_ISCHR(mode):
        type = stat.S_IFCHR
    else:
        # XXX should we just fallback to copying normally?
        raise RuntimeError, "Tried to copy %s which isn't a device node" % (src,)

    isys.mknod(dest, mode | type, filestat.st_rdev)

# make the device nodes for all of the drives on the system
def makeDriveDeviceNodes():
    import raid
    
    hardDrives = isys.hardDriveDict()
    for drive in hardDrives.keys():
        isys.makeDevInode(drive, "/dev/%s" % (drive,))

        if drive.startswith("hd"):
            num = 32
        elif drive.startswith("dasd"):
            num = 4
        else:
            num = 15

        if (drive.startswith("cciss") or drive.startswith("ida") or
            drive.startswith("rd")):
            sep = "p"
        else:
            sep = ""

        for i in range(1, num):
            dev = "%s%s%d" % (drive, sep, i)
            isys.makeDevInode(dev, "/dev/%s" % (dev,))

    cdroms = isys.cdromList()
    for drive in cdroms:
        isys.makeDevInode(drive, "/dev/%s" % (drive,))

    mdlist = raid.scanForRaid(hardDrives)
    for mdMinor, devices, level, numdisks in mdlist:
        md = "md%d" %(mdMinor,)
        isys.makeDevInode(md, "/dev/%s" %(md,))
    
def needsEnterpriseKernel():
    rc = 0

    try:
        f = open("/proc/e820info", "r")
    except IOError:
        return 0
    for l in f.readlines():
	l = string.split(l)
	if l[3] == '(reserved)': continue

	regionEnd = (string.atol(l[0], 16) - 1) + string.atol(l[2], 16)
	if regionEnd > 0xffffffffL:
	    rc = 1

    return rc

#
# scan /proc/mounts to see if we've already have USB mounted
#
# kernel can fall over if we mount it twice on some hw (bug #71554)
#
def isUSBDevFSMounted():
    try:
	f = open("/proc/mounts", "r")
	lines = f.readlines()
	f.close()
	for l in lines:
	    if string.find(l, "usbdevfs") != -1:
		return 1
    except:
	log("In isUSBMounted, failed to open /proc/mounts")
	return 0

    return 0

# return the ppc machine variety type
def getPPCMachine():
    machine = None
    # ppc machine hash
    ppcType = { 'Mac'      : 'PMac',
                'Book'     : 'PMac',
                'CHRP IBM' : 'pSeries',
                'iSeries'  : 'iSeries',
                'PReP'     : 'PReP',
                'CHRP'     : 'pSeries',
                'Amiga'    : 'APUS',
                'Gemini'   : 'Gemini',
                'Shiner'   : 'ANS',
                'BRIQ'     : 'BRIQ',
                'Teron'    : 'Teron',
                'AmigaOne' : 'Teron'
                }

    if getArch() != "ppc":
        return 0

    f = open('/proc/cpuinfo', 'r')
    lines = f.readlines()
    f.close()
    for line in lines:
        if line.find('machine') != -1:
            machine = line.split(':')[1]
            break

    if machine is None:
        log("Unable to find PowerPC machine type")
        return

    for type in ppcType.items():
        if machine.find(type[0]) != -1:
            return type[1]

    log("Unknown PowerPC machine type: %s" %(machine,))
    return 0

# return the pmac machine id
def getPPCMacID():
    machine = None
    
    if getArch() != "ppc":
        return 0
    if getPPCMachine() != "PMac":
        return 0

    f = open('/proc/cpuinfo', 'r')
    lines = f.readlines()
    f.close()
    for line in lines:
      if line.find('machine') != -1:
        machine = line.split(':')[1]
        machine = machine.strip()
        return machine

    log("WARNING: No Power Mac machine id")
    return 0

# return the pmac generation
def getPPCMacGen():
    # XXX: should NuBus be here?
    pmacGen = ['OldWorld', 'NewWorld', 'NuBus']
    
    if getArch() != "ppc":
        return 0
    if getPPCMachine() != "PMac":
        return 0

    f = open('/proc/cpuinfo', 'r')
    lines = f.readlines()
    f.close()
    gen = None
    for line in lines:
      if line.find('pmac-generation') != -1:
        gen = line.split(':')[1]
        break

    if gen is None:
        log("Unable to find pmac-generation")

    for type in pmacGen:
      if gen.find(type) != -1:
          return type

    log("Unknown Power Mac generation: %s" %(gen,))
    return 0

# return if pmac machine is it an iBook/PowerBook
def getPPCMacBook():
    if getArch() != "ppc":
        return 0
    if getPPCMachine() != "PMac":
        return 0

    f = open('/proc/cpuinfo', 'r')
    lines = f.readlines()
    f.close()

    for line in lines:
      if not string.find(string.lower(line), 'book') == -1:
        return 1
    return 0

def writeRpmPlatform(root="/"):
    import rhpl.arch

    if flags.test:
        return
    if os.access("%s/etc/rpm/platform" %(root,), os.R_OK):
        return
    if not os.access("%s/etc/rpm" %(root,), os.X_OK):
        os.mkdir("%s/etc/rpm" %(root,))
    f = open("%s/etc/rpm/platform" %(root,), 'w+')
    f.write("%s-redhat-linux\n" %(rhpl.arch.canonArch,))
    f.close()

    # FIXME: writing /etc/rpm/macros feels wrong somehow
    # temporary workaround for #92285
    if os.access("%s/etc/rpm/macros" %(root,), os.R_OK):
        return
    if not (rhpl.arch.canonArch.startswith("ppc64") or
            rhpl.arch.canonArch in ("s390x", "sparc64", "x86_64")):
        return
    f = open("%s/etc/rpm/macros" %(root,), 'w+')
    f.write("%_transaction_color   3\n")
    f.close()