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a=ed25519-sha256; t=1788347062; l=2796; i=andrea.cervesato@suse.com; s=20251210; h=from:subject:message-id; bh=Hjlffi1pK+WfQsn3J4k8Rp+BQ4M9BehXb2Obt8tGWN8=; b=rUiFr+2KAqYzUXOzyYg3hWXRJQP1r57BgnV/fRD+bIsrCef51MxGxSMEbjsXNoO+mchYT3H4u JcLPzdpjERwAT8fsbGoJEuivyCaR+lhDHbmkmyMNtHutKtSFi2jgs7d X-Developer-Key: i=andrea.cervesato@suse.com; a=ed25519; pk=zKY+6GCauOiuHNZ//d8PQ/UL4jFCTKbXrzXAOQSLevI= X-Spamd-Result: default: False [-4.30 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.997]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; TO_DN_ALL(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:mid, suse.com:email, imap1.dmz-prg2.suse.org:helo] X-Virus-Scanned: clamav-milter 1.0.9 at in-6.smtp.seeweb.it X-Virus-Status: Clean Subject: [LTP] [PATCH 03/33] keyctl11: Test KEYCTL_DESCRIBE with exact buffer size X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" From: Andrea Cervesato Test KEYCTL_DESCRIBE when called with a buffer sized exactly to the full description length: verify the string is copied completely including the terminating NUL byte. Signed-off-by: Andrea Cervesato --- runtest/syscalls | 1 + testcases/kernel/syscalls/keyctl/.gitignore | 1 + testcases/kernel/syscalls/keyctl/keyctl11.c | 62 +++++++++++++++++++++++++++++ 3 files changed, 64 insertions(+) diff --git a/runtest/syscalls b/runtest/syscalls index bf4c0d46e..7c9042471 100644 --- a/runtest/syscalls +++ b/runtest/syscalls @@ -728,6 +728,7 @@ keyctl07 keyctl07 keyctl08 keyctl08 keyctl09 keyctl09 keyctl10 keyctl10 +keyctl11 keyctl11 kcmp01 kcmp01 kcmp02 kcmp02 diff --git a/testcases/kernel/syscalls/keyctl/.gitignore b/testcases/kernel/syscalls/keyctl/.gitignore index 08b2d101d..4974fe48d 100644 --- a/testcases/kernel/syscalls/keyctl/.gitignore +++ b/testcases/kernel/syscalls/keyctl/.gitignore @@ -8,3 +8,4 @@ /keyctl08 /keyctl09 /keyctl10 +/keyctl11 diff --git a/testcases/kernel/syscalls/keyctl/keyctl11.c b/testcases/kernel/syscalls/keyctl/keyctl11.c new file mode 100644 index 000000000..4dd0be7ca --- /dev/null +++ b/testcases/kernel/syscalls/keyctl/keyctl11.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2026 Andrea Cervesato + */ + +/*\ + * Test ``KEYCTL_DESCRIBE`` of :manpage:`keyctl(2)` with exact buffer size. + * + * [Algorithm] + * + * - describe a key into a buffer sized exactly to the full string length, + * verify full string copy including terminating NUL byte + */ + +#include "keyctl_common.h" + +static key_serial_t key; +static long desc_len; +static char *buf; + +static void setup(void) +{ + SAFE_KEYCTL(KEYCTL_JOIN_SESSION_KEYRING, 0, 0, 0, 0); + + key = new_user_key("k", "payload", 7, KEY_SPEC_PROCESS_KEYRING); + SAFE_KEYCTL(KEYCTL_SETPERM, key, KEY_PERM_SET, 0, 0); + + TEST(keyctl(KEYCTL_DESCRIBE, key, (unsigned long)NULL, 0, 0)); + if (TST_RET < 0) + tst_brk(TBROK | TTERRNO, "KEYCTL_DESCRIBE failed"); + + desc_len = TST_RET; + buf = SAFE_MALLOC(desc_len); +} + +static void cleanup(void) +{ + free(buf); +} + +static void run(void) +{ + memset(buf, 0, desc_len); + TST_EXP_EQ_LI_SILENT(keyctl(KEYCTL_DESCRIBE, key, (unsigned long)buf, + desc_len, 0), desc_len); + if (!TST_PASS) + return; + + if (buf[desc_len - 1] != '\0') { + tst_res(TFAIL, "description is not NUL terminated"); + return; + } + + tst_res(TPASS, "full description including NUL fits exact %ld byte buffer", + desc_len); +} + +static struct tst_test test = { + .setup = setup, + .cleanup = cleanup, + .test_all = run, +}; -- 2.51.0 -- Mailing list info: https://lists.linux.it/listinfo/ltp