Mercurial > gnulib
annotate tests/test-fdatasync.c @ 40186:8964917f9574
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| author | Karl Berry <karl@freefriends.org> |
|---|---|
| date | Mon, 18 Feb 2019 08:02:49 -0800 |
| parents | b06060465f09 |
| children |
| rev | line source |
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| 15622 | 1 /* Test of fdatasync() function. |
|
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maint: Run 'make update-copyright'
Paul Eggert <eggert@cs.ucla.edu>
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2 Copyright (C) 2008-2019 Free Software Foundation, Inc. |
| 15622 | 3 |
| 4 This program is free software: you can redistribute it and/or modify | |
| 5 it under the terms of the GNU General Public License as published by | |
| 6 the Free Software Foundation; either version 3 of the License, or | |
| 7 (at your option) any later version. | |
| 8 | |
| 9 This program is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 GNU General Public License for more details. | |
| 13 | |
| 14 You should have received a copy of the GNU General Public License | |
| 19190 | 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| 15622 | 16 |
| 17 #include <config.h> | |
| 18 | |
| 19 #include <unistd.h> | |
| 20 | |
| 21 #include "signature.h" | |
| 22 SIGNATURE_CHECK (fdatasync, int, (int)); | |
| 23 | |
| 24 #include <errno.h> | |
| 25 #include <fcntl.h> | |
| 26 | |
| 27 #include "macros.h" | |
| 28 | |
| 29 int | |
| 30 main (void) | |
| 31 { | |
| 32 int fd; | |
| 33 const char *file = "test-fdatasync.txt"; | |
| 34 | |
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35 /* Assuming stdin and stdout are ttys, fdatasync is allowed to fail, but |
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36 may succeed as an extension. */ |
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37 for (fd = 0; fd < 2; fd++) |
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38 if (fdatasync (fd) != 0) |
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39 { |
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40 ASSERT (errno == EINVAL /* POSIX */ |
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41 || errno == ENOTSUP /* seen on Mac OS X 10.5 */ |
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42 || errno == EBADF /* seen on AIX 7.1 */ |
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43 || errno == EIO /* seen on mingw */ |
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44 ); |
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45 } |
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46 |
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47 /* fdatasync must fail on invalid fd. */ |
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48 { |
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49 errno = 0; |
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50 ASSERT (fdatasync (-1) == -1); |
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51 ASSERT (errno == EBADF); |
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52 } |
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53 { |
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54 close (99); |
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55 errno = 0; |
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56 ASSERT (fdatasync (99) == -1); |
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57 ASSERT (errno == EBADF); |
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58 } |
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59 |
| 15622 | 60 fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644); |
| 61 ASSERT (0 <= fd); | |
| 62 ASSERT (write (fd, "hello", 5) == 5); | |
| 63 ASSERT (fdatasync (fd) == 0); | |
| 64 ASSERT (close (fd) == 0); | |
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65 |
| 15622 | 66 #if 0 |
| 67 /* POSIX is self-contradictory on whether fdatasync must fail on | |
| 68 read-only file descriptors. Glibc allows it, as does our | |
| 69 implementation if fsync allows it. */ | |
| 70 fd = open (file, O_RDONLY); | |
| 71 ASSERT (0 <= fd); | |
| 72 errno = 0; | |
| 73 ASSERT (fdatasync (fd) == -1); | |
| 74 ASSERT (errno == EBADF); | |
| 75 ASSERT (close (fd) == 0); | |
| 76 #endif | |
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77 |
| 15622 | 78 ASSERT (unlink (file) == 0); |
| 79 | |
| 80 return 0; | |
| 81 } |