4.104.114.84.95
Last change
on this file since 2ada69a was
0895bdb,
checked in by Joel Sherrill <joel.sherrill@…>, on 11/23/98 at 18:57:48
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Added tests in support of the file system infrastructure.
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-
Property mode set to
100644
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File size:
1.2 KB
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Rev | Line | |
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[0895bdb] | 1 | /* |
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| 2 | * A test support function which extends the file to the specified |
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| 3 | * length. This handles the implied open(), lseek(), write(), and close() |
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| 4 | * operations. |
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| 5 | * |
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| 6 | * The defined behavior is a seek() followed by a write() extends the file |
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| 7 | * and zero fills the new length part. |
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| 8 | * |
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| 9 | * $Id$ |
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| 10 | */ |
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| 11 | |
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| 12 | #include <stdio.h> |
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| 13 | |
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| 14 | #include <sys/types.h> |
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| 15 | #include <sys/stat.h> |
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| 16 | #include <fcntl.h> |
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| 17 | #include <unistd.h> |
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| 18 | #include <errno.h> |
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| 19 | #include <string.h> |
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| 20 | #include <ctype.h> |
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| 21 | |
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| 22 | #include <assert.h> |
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| 23 | |
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| 24 | /* |
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| 25 | * test_extend routine |
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| 26 | */ |
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| 27 | |
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| 28 | void test_extend( |
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| 29 | char *file, |
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| 30 | off_t offset |
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| 31 | ) |
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| 32 | { |
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| 33 | int fd; |
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| 34 | int status; |
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| 35 | char c = 0; |
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| 36 | |
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| 37 | fd = open( file, O_WRONLY ); |
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| 38 | if ( fd == -1 ) { |
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| 39 | printf( "test_extend: open( %s ) failed : %s\n", file, strerror( errno ) ); |
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| 40 | exit( 0 ); |
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| 41 | } |
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| 42 | |
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| 43 | status = lseek( fd, offset - 1, SEEK_SET ); |
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| 44 | assert( !status ); |
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| 45 | |
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| 46 | status = write( fd, &c, 1 ); |
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| 47 | if ( status == -1 ) { |
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| 48 | printf( "test_extend: write( %s ) failed : %s\n", file, strerror( errno ) ); |
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| 49 | exit( 0 ); |
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| 50 | } |
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| 51 | |
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| 52 | if ( status != 1 ) { |
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| 53 | printf( "test_extend: write( %s ) only wrote %d of %d bytes\n", |
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| 54 | file, status, 1 ); |
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| 55 | exit( 0 ); |
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| 56 | } |
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| 57 | |
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| 58 | status = close( fd ); |
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| 59 | assert( !status ); |
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| 60 | } |
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