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linux: zpl: inode: pass through RENAME_NOREPLACE
Fragment cited from Documentation/filesystems/vfs.rst,
the description is unchanged since the original in kernel commit
520c8b16505236fc82daa352e6c5e73cd9870cff ("vfs: add renameat2 syscall")
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| // SPDX-License-Identifier: 0BSD | ||
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| #undef NDEBUG | ||
| #include <assert.h> | ||
| #include <fcntl.h> | ||
| #include <errno.h> | ||
| #include <stdio.h> | ||
| #include <sys/stat.h> | ||
| #include <sys/types.h> | ||
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| #ifdef RENAME_NOREPLACE | ||
| static void makeff(int in, size_t sz, struct stat *madeff) { | ||
| int ff = openat(in, "from", | ||
| O_WRONLY | O_CREAT | O_TRUNC | O_EXCL | O_CLOEXEC, 0644); | ||
| assert(write(ff, "from", sz) == sz); | ||
| fstat(ff, madeff); | ||
| close(ff); | ||
| } | ||
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| int main(int argc, const char **argv) { | ||
| int from = argc > 1 ? | ||
| open(argv[1], O_PATH | O_DIRECTORY | O_CLOEXEC) : AT_FDCWD; | ||
| int to = argc > 2 ? | ||
| open(argv[2], O_PATH | O_DIRECTORY | O_CLOEXEC) : AT_FDCWD; | ||
| assert(from != -1 && to != -1); | ||
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| struct stat ffbuf, frombuf, tobuf; | ||
| makeff(from, 3, &ffbuf); | ||
| fstatat(from, "from", &frombuf, 0); | ||
| assert(!memcmp(&ffbuf, &frombuf, sizeof (struct stat))); | ||
| assert(!renameat2(from, "from", to, "to", RENAME_NOREPLACE)); | ||
| assert(!fstatat(to, "to", &tobuf, 0)); | ||
| assert(!memcmp(&ffbuf, &tobuf, sizeof (struct stat))); | ||
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| struct stat ffbuf2, frombuf2, from2buf2, tobuf2; | ||
| makeff(from, 4, &ffbuf2); | ||
| fstatat(from, "from", &frombuf2, 0); | ||
| assert(!memcmp(&ffbuf2, &frombuf2, sizeof (struct stat))); | ||
| assert(memcmp(&ffbuf, &ffbuf2, sizeof (struct stat))); | ||
| assert(renameat2(from, "from", to, "to", RENAME_NOREPLACE) == -1 && | ||
| errno == EEXIST); | ||
| assert(!fstatat(from, "from", &from2buf2, 0)); | ||
| assert(!memcmp(&frombuf2, &from2buf2, sizeof (struct stat))); | ||
| assert(!fstatat(to, "to", &tobuf2, 0)); | ||
| assert(!memcmp(&tobuf, &tobuf2, sizeof (struct stat))); | ||
| } | ||
| #else | ||
| int main(void) { | ||
| abort(); | ||
| } | ||
| #endif |
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22 changes: 22 additions & 0 deletions
22
tests/zfs-tests/tests/functional/rename_dirs/rename_no_replace_001_pos.ksh
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| #!/bin/ksh -p | ||
| # SPDX-License-Identifier: 0BSD | ||
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| . $STF_SUITE/include/libtest.shlib | ||
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| is_linux || [ $(linux_version) -ge $(linux_version "3.15.0") ] || log_unsupported "renameat2(2) is Linux-only" | ||
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| verify_runnable "both" | ||
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| log_assert "renameat2(RENAME_NOREPLACE) works" | ||
| log_onexit log_must rm -r "$TESTDIR"/* | ||
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| mkdir "$TESTDIR"/{a,b,c} | ||
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| log_must rename_no_replace "$TESTDIR" "$TESTDIR" ; rm "$TESTDIR"/from | ||
| log_must rename_no_replace "$TESTDIR" "$TESTDIR"/a | ||
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| cd "$TESTDIR"/b | ||
| log_must rename_no_replace ../c; rm to | ||
| log_must rename_no_replace | ||
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| log_pass |