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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <kunit/test.h>#include <linux/kernel.h>#include <linux/module.h>#include <linux/printk.h>#include <linux/random.h>#include <linux/rtc.h>#include <linux/slab.h>#include <linux/sprintf.h>#include <linux/string.h>
#include <linux/bitmap.h>#include <linux/dcache.h>#include <linux/socket.h>#include <linux/in.h>#include <linux/in6.h>
#include <linux/gfp.h>#include <linux/mm.h>
#include <linux/property.h>
#define BUF_SIZE 256#define PAD_SIZE 16#define FILL_CHAR '$'
#define NOWARN(option, comment, block) \ __diag_push(); \ __diag_ignore_all(#option, comment); \ block \ __diag_pop();
static unsigned int total_tests;
static char *test_buffer;static char *alloced_buffer;
static void __printf(7, 0)do_test(struct kunit *kunittest, const char *file, const int line, int bufsize, const char *expect, int elen, const char *fmt, va_list ap){ va_list aq; int ret, written;
total_tests++;
memset(alloced_buffer, FILL_CHAR, BUF_SIZE + 2*PAD_SIZE); va_copy(aq, ap); ret = vsnprintf(test_buffer, bufsize, fmt, aq); va_end(aq);
if (ret != elen) { KUNIT_FAIL(kunittest, "%s:%d: vsnprintf(buf, %d, \"%s\", ...) returned %d, expected %d\n", file, line, bufsize, fmt, ret, elen); return; }
if (memchr_inv(alloced_buffer, FILL_CHAR, PAD_SIZE)) { KUNIT_FAIL(kunittest, "%s:%d: vsnprintf(buf, %d, \"%s\", ...) wrote before buffer\n", file, line, bufsize, fmt); return; }
if (!bufsize) { if (memchr_inv(test_buffer, FILL_CHAR, BUF_SIZE + PAD_SIZE)) { KUNIT_FAIL(kunittest, "%s:%d: vsnprintf(buf, 0, \"%s\", ...) wrote to buffer\n", file, line, fmt); } return; }
written = min(bufsize-1, elen); if (test_buffer[written]) { KUNIT_FAIL(kunittest, "%s:%d: vsnprintf(buf, %d, \"%s\", ...) did not nul-terminate buffer\n", file, line, bufsize, fmt); return; }
if (memchr_inv(test_buffer + written + 1, FILL_CHAR, bufsize - (written + 1))) { KUNIT_FAIL(kunittest, "%s:%d: vsnprintf(buf, %d, \"%s\", ...) wrote beyond the nul-terminator\n", file, line, bufsize, fmt); return; }
if (memchr_inv(test_buffer + bufsize, FILL_CHAR, BUF_SIZE + PAD_SIZE - bufsize)) { KUNIT_FAIL(kunittest, "%s:%d: vsnprintf(buf, %d, \"%s\", ...) wrote beyond buffer\n", file, line, bufsize, fmt); return; }
if (memcmp(test_buffer, expect, written)) { KUNIT_FAIL(kunittest, "%s:%d: vsnprintf(buf, %d, \"%s\", ...) wrote '%s', expected '%.*s'\n", file, line, bufsize, fmt, test_buffer, written, expect); return; }}
static void __printf(6, 7)__test(struct kunit *kunittest, const char *file, const int line, const char *expect, int elen, const char *fmt, ...){ va_list ap; int rand; char *p;
if (elen >= BUF_SIZE) { KUNIT_FAIL(kunittest, "%s:%d: error in test suite: expected length (%d) >= BUF_SIZE (%d). fmt=\"%s\"\n", file, line, elen, BUF_SIZE, fmt); return; }
va_start(ap, fmt);
/* * Every fmt+args is subjected to four tests: Three where we * tell vsnprintf varying buffer sizes (plenty, not quite * enough and 0), and then we also test that kvasprintf would * be able to print it as expected. */ do_test(kunittest, file, line, BUF_SIZE, expect, elen, fmt, ap); rand = get_random_u32_inclusive(1, elen + 1); /* Since elen < BUF_SIZE, we have 1 <= rand <= BUF_SIZE. */ do_test(kunittest, file, line, rand, expect, elen, fmt, ap); do_test(kunittest, file, line, 0, expect, elen, fmt, ap);
p = kvasprintf(GFP_KERNEL, fmt, ap); if (p) { total_tests++; if (memcmp(p, expect, elen+1)) { KUNIT_FAIL(kunittest, "%s:%d: kvasprintf(..., \"%s\", ...) returned '%s', expected '%s'\n", file, line, fmt, p, expect); } kfree(p); } va_end(ap);}
#define test(expect, fmt, ...) \ __test(kunittest, __FILE__, __LINE__, expect, strlen(expect), fmt, ##__VA_ARGS__)
static voidtest_basic(struct kunit *kunittest){ /* Work around annoying "warning: zero-length gnu_printf format string". */ char nul = '\0';
test("", &nul); test("100%", "100%%"); test("xxx%yyy", "xxx%cyyy", '%'); __test(kunittest, __FILE__, __LINE__, "xxx\0yyy", 7, "xxx%cyyy", '\0');}
static voidtest_number(struct kunit *kunittest){ test("0x1234abcd ", "%#-12x", 0x1234abcd); test(" 0x1234abcd", "%#12x", 0x1234abcd); test("0|001| 12|+123| 1234|-123|-1234", "%d|%03d|%3d|%+d|% d|%+d|% d", 0, 1, 12, 123, 1234, -123, -1234); NOWARN(-Wformat, "Intentionally test narrowing conversion specifiers.", { test("0|1|1|128|255", "%hhu|%hhu|%hhu|%hhu|%hhu", 0, 1, 257, 128, -1); test("0|1|1|-128|-1", "%hhd|%hhd|%hhd|%hhd|%hhd", 0, 1, 257, 128, -1); test("2015122420151225", "%ho%ho%#ho", 1037, 5282, -11627); }) /* * POSIX/C99: »The result of converting zero with an explicit * precision of zero shall be no characters.« Hence the output * from the below test should really be "00|0||| ". However, * the kernel's printf also produces a single 0 in that * case. This test case simply documents the current * behaviour. */ test("00|0|0|0|0", "%.2d|%.1d|%.0d|%.*d|%1.0d", 0, 0, 0, 0, 0, 0);}
static voidtest_string(struct kunit *kunittest){ test("", "%s%.0s", "", "123"); test("ABCD|abc|123", "%s|%.3s|%.*s", "ABCD", "abcdef", 3, "123456"); test("1 | 2|3 | 4|5 ", "%-3s|%3s|%-*s|%*s|%*s", "1", "2", 3, "3", 3, "4", -3, "5"); test("1234 ", "%-10.4s", "123456"); test(" 1234", "%10.4s", "123456"); /* * POSIX and C99 say that a negative precision (which is only * possible to pass via a * argument) should be treated as if * the precision wasn't present, and that if the precision is * omitted (as in %.s), the precision should be taken to be * 0. However, the kernel's printf behave exactly opposite, * treating a negative precision as 0 and treating an omitted * precision specifier as if no precision was given. * * These test cases document the current behaviour; should * anyone ever feel the need to follow the standards more * closely, this can be revisited. */ test(" ", "%4.*s", -5, "123456"); test("123456", "%.s", "123456"); test("a||", "%.s|%.0s|%.*s", "a", "b", 0, "c"); test("a | | ", "%-3.s|%-3.0s|%-3.*s", "a", "b", 0, "c");}
#define PLAIN_BUF_SIZE 64 /* leave some space so we don't oops */
#if BITS_PER_LONG == 64
#define PTR_WIDTH 16#define PTR ((void *)0xffff0123456789abUL)#define PTR_STR "ffff0123456789ab"#define PTR_VAL_NO_CRNG "(____ptrval____)"#define ZEROS "00000000" /* hex 32 zero bits */#define ONES "ffffffff" /* hex 32 one bits */
#else
#define PTR_WIDTH 8#define PTR ((void *)0x456789ab)#define PTR_STR "456789ab"#define PTR_VAL_NO_CRNG "(ptrval)"#define ZEROS ""#define ONES ""
#endif /* BITS_PER_LONG == 64 */
static voidplain_hash_to_buffer(struct kunit *kunittest, const void *p, char *buf, size_t len){ KUNIT_ASSERT_EQ(kunittest, snprintf(buf, len, "%p", p), PTR_WIDTH);
if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) { kunit_skip(kunittest, "crng possibly not yet initialized. plain 'p' buffer contains \"%s\"\n", PTR_VAL_NO_CRNG); }}
static voidhash_pointer(struct kunit *kunittest){ if (no_hash_pointers) kunit_skip(kunittest, "hash pointers disabled");
char buf[PLAIN_BUF_SIZE];
plain_hash_to_buffer(kunittest, PTR, buf, PLAIN_BUF_SIZE);
/* * The hash of %p is unpredictable, therefore test() cannot be used. * * Instead verify that the first 32 bits are zeros on a 64-bit system * and that the non-hashed value is not printed. */
KUNIT_EXPECT_MEMEQ(kunittest, buf, ZEROS, strlen(ZEROS)); KUNIT_EXPECT_MEMNEQ(kunittest, buf, PTR_STR, PTR_WIDTH);}
/* * This is a macro so that the compiler can compare its arguments to the * __printf() attribute on __test(). This cannot be a function with a __printf() * attribute because GCC requires __printf() functions to be variadic. */#define test_hashed(kunittest, fmt, p) \ do { \ char buf[PLAIN_BUF_SIZE]; \ plain_hash_to_buffer(kunittest, p, buf, PLAIN_BUF_SIZE); \ test(buf, fmt, p); \ } while (0)
/* * NULL pointers aren't hashed. */static voidnull_pointer(struct kunit *kunittest){ test(ZEROS "00000000", "%p", NULL); test(ZEROS "00000000", "%px", NULL); test("(null)", "%pE", NULL);}
/* * Error pointers aren't hashed. */static voiderror_pointer(struct kunit *kunittest){ test(ONES "fffffff5", "%p", ERR_PTR(-11)); test(ONES "fffffff5", "%px", ERR_PTR(-11)); test("(efault)", "%pE", ERR_PTR(-11));}
#define PTR_INVALID ((void *)0x000000ab)
static voidinvalid_pointer(struct kunit *kunittest){ test_hashed(kunittest, "%p", PTR_INVALID); test(ZEROS "000000ab", "%px", PTR_INVALID); test("(efault)", "%pE", PTR_INVALID);}
static voidsymbol_ptr(struct kunit *kunittest){}
static voidkernel_ptr(struct kunit *kunittest){ switch (kptr_restrict) { case 0: if (no_hash_pointers) { test(PTR_STR, "%pK", PTR); } else { char buf[PLAIN_BUF_SIZE];
plain_hash_to_buffer(kunittest, PTR, buf, PLAIN_BUF_SIZE); /* %pK behaves the same as hashing */ test(buf, "%pK", PTR); } break; case 1: /* The KUnit kthread has all capabilities, including CAP_SYSLOG */ test(PTR_STR, "%pK", PTR); break; case 2: default: test(ZEROS "00000000", "%pK", PTR); break; }}
static voidstruct_resource(struct kunit *kunittest){ struct resource test_resource = { .start = 0xc0ffee00, .end = 0xc0ffee00, .flags = IORESOURCE_MEM, };
test("[mem 0xc0ffee00 flags 0x200]", "%pr", &test_resource);
test_resource = (struct resource) { .start = 0xc0ffee, .end = 0xba5eba11, .flags = IORESOURCE_MEM, }; test("[mem 0x00c0ffee-0xba5eba11 flags 0x200]", "%pr", &test_resource);
test_resource = (struct resource) { .start = 0xba5eba11, .end = 0xc0ffee, .flags = IORESOURCE_MEM, }; test("[mem 0xba5eba11-0x00c0ffee flags 0x200]", "%pr", &test_resource);
test_resource = (struct resource) { .start = 0xba5eba11, .end = 0xba5eca11, .flags = IORESOURCE_MEM, };
test("[mem 0xba5eba11-0xba5eca11 flags 0x200]", "%pr", &test_resource);
test_resource = (struct resource) { .start = 0xba11, .end = 0xca10, .flags = IORESOURCE_IO | IORESOURCE_DISABLED | IORESOURCE_UNSET, };
test("[io size 0x1000 disabled]", "%pR", &test_resource);}
static voidstruct_range(struct kunit *kunittest){ struct range test_range = DEFINE_RANGE(0xc0ffee00ba5eba11, 0xc0ffee00ba5eba11); test("[range 0xc0ffee00ba5eba11]", "%pra", &test_range);
test_range = DEFINE_RANGE(0xc0ffee, 0xba5eba11); test("[range 0x0000000000c0ffee-0x00000000ba5eba11]", "%pra", &test_range);
test_range = DEFINE_RANGE(0xba5eba11, 0xc0ffee); test("[range 0x00000000ba5eba11-0x0000000000c0ffee]", "%pra", &test_range);}
static voidaddr(struct kunit *kunittest){}
static voidescaped_str(struct kunit *kunittest){}
static voidhex_string(struct kunit *kunittest){ const char buf[3] = {0xc0, 0xff, 0xee};
test("c0 ff ee|c0:ff:ee|c0-ff-ee|c0ffee", "%3ph|%3phC|%3phD|%3phN", buf, buf, buf, buf); test("c0 ff ee|c0:ff:ee|c0-ff-ee|c0ffee", "%*ph|%*phC|%*phD|%*phN", 3, buf, 3, buf, 3, buf, 3, buf);}
static voidmac(struct kunit *kunittest){ const u8 addr[6] = {0x2d, 0x48, 0xd6, 0xfc, 0x7a, 0x05};
test("2d:48:d6:fc:7a:05", "%pM", addr); test("05:7a:fc:d6:48:2d", "%pMR", addr); test("05:7A:FC:D6:48:2D", "%pMRU", addr); test("2d-48-d6-fc-7a-05", "%pMF", addr); test("2d48d6fc7a05", "%pm", addr); test("2D48D6FC7A05", "%pmU", addr); test("057afcd6482d", "%pmR", addr);}
static voidip4(struct kunit *kunittest){ struct sockaddr_in sa;
sa.sin_family = AF_INET; sa.sin_port = cpu_to_be16(12345); sa.sin_addr.s_addr = cpu_to_be32(0x7f000001);
test("127.000.000.001|127.0.0.1", "%pi4|%pI4", &sa.sin_addr, &sa.sin_addr); test("127.000.000.001|127.0.0.1", "%piS|%pIS", &sa, &sa); sa.sin_addr.s_addr = cpu_to_be32(0x01020304); test("001.002.003.004:12345|1.2.3.4:12345", "%piSp|%pISp", &sa, &sa);}
static voidip6(struct kunit *kunittest){ const struct in6_addr addr = { .s6_addr = { 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04, 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 } }; const struct in6_addr single_zero = { .s6_addr = { 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x04, 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 } }; struct sockaddr_in6 sa = { .sin6_family = AF_INET6, .sin6_port = cpu_to_be16(12345), .sin6_addr = addr, };
test("00010002000300040005000600070008|0001:0002:0003:0004:0005:0006:0007:0008", "%pi6|%pI6", &addr, &addr); test("00010002000300040005000600070008|0001:0002:0003:0004:0005:0006:0007:0008", "%piS|%pIS", &sa, &sa); test("1:2:3:4:5:6:7:8", "%pI6c", &addr); test("1:0:3:4:5:6:7:8", "%pI6c", &single_zero); test("[1:2:3:4:5:6:7:8]:12345", "%pISpc", &sa);}
static voiduuid(struct kunit *kunittest){ const char uuid[16] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
test("00010203-0405-0607-0809-0a0b0c0d0e0f", "%pUb", uuid); test("00010203-0405-0607-0809-0A0B0C0D0E0F", "%pUB", uuid); test("03020100-0504-0706-0809-0a0b0c0d0e0f", "%pUl", uuid); test("03020100-0504-0706-0809-0A0B0C0D0E0F", "%pUL", uuid);}
static struct dentry test_dentry[4] = { { .d_parent = &test_dentry[0], .d_name = QSTR_INIT(test_dentry[0].d_iname, 3), .d_iname = "foo" }, { .d_parent = &test_dentry[0], .d_name = QSTR_INIT(test_dentry[1].d_iname, 5), .d_iname = "bravo" }, { .d_parent = &test_dentry[1], .d_name = QSTR_INIT(test_dentry[2].d_iname, 4), .d_iname = "alfa" }, { .d_parent = &test_dentry[2], .d_name = QSTR_INIT(test_dentry[3].d_iname, 5), .d_iname = "romeo" },};
static voiddentry(struct kunit *kunittest){ test("foo", "%pd", &test_dentry[0]); test("foo", "%pd2", &test_dentry[0]);
test("(null)", "%pd", NULL); test("(efault)", "%pd", PTR_INVALID); test("(null)", "%pD", NULL); test("(efault)", "%pD", PTR_INVALID);
test("romeo", "%pd", &test_dentry[3]); test("alfa/romeo", "%pd2", &test_dentry[3]); test("bravo/alfa/romeo", "%pd3", &test_dentry[3]); test("/bravo/alfa/romeo", "%pd4", &test_dentry[3]); test("/bravo/alfa", "%pd4", &test_dentry[2]);
test("bravo/alfa |bravo/alfa ", "%-12pd2|%*pd2", &test_dentry[2], -12, &test_dentry[2]); test(" bravo/alfa| bravo/alfa", "%12pd2|%*pd2", &test_dentry[2], 12, &test_dentry[2]);}
static voidstruct_va_format(struct kunit *kunittest){}
static voidtime_and_date(struct kunit *kunittest){ /* 1543210543 */ const struct rtc_time tm = { .tm_sec = 43, .tm_min = 35, .tm_hour = 5, .tm_mday = 26, .tm_mon = 10, .tm_year = 118, }; /* 2019-01-04T15:32:23 */ time64_t t = 1546615943; struct timespec64 ts = { .tv_sec = t, .tv_nsec = 11235813 };
test("(%pt?)", "%pt", &tm); test("2018-11-26T05:35:43", "%ptR", &tm); test("0118-10-26T05:35:43", "%ptRr", &tm); test("05:35:43|2018-11-26", "%ptRt|%ptRd", &tm, &tm); test("05:35:43|0118-10-26", "%ptRtr|%ptRdr", &tm, &tm); test("05:35:43|2018-11-26", "%ptRttr|%ptRdtr", &tm, &tm); test("05:35:43 tr|2018-11-26 tr", "%ptRt tr|%ptRd tr", &tm, &tm);
test("2019-01-04T15:32:23", "%ptT", &t); test("0119-00-04T15:32:23", "%ptTr", &t); test("15:32:23|2019-01-04", "%ptTt|%ptTd", &t, &t); test("15:32:23|0119-00-04", "%ptTtr|%ptTdr", &t, &t);
test("2019-01-04 15:32:23", "%ptTs", &t); test("0119-00-04 15:32:23", "%ptTsr", &t); test("15:32:23|2019-01-04", "%ptTts|%ptTds", &t, &t); test("15:32:23|0119-00-04", "%ptTtrs|%ptTdrs", &t, &t);
test("2019-01-04T15:32:23.011235813", "%ptS", &ts); test("1546615943.011235813", "%ptSp", &ts);}
static voidstruct_clk(struct kunit *kunittest){}
static voidlarge_bitmap(struct kunit *kunittest){ const int nbits = 1 << 16; unsigned long *bits = bitmap_zalloc(nbits, GFP_KERNEL); if (!bits) return;
bitmap_set(bits, 1, 20); bitmap_set(bits, 60000, 15); test("1-20,60000-60014", "%*pbl", nbits, bits); bitmap_free(bits);}
static voidbitmap(struct kunit *kunittest){ DECLARE_BITMAP(bits, 20); const int primes[] = {2,3,5,7,11,13,17,19}; int i;
bitmap_zero(bits, 20); test("00000|00000", "%20pb|%*pb", bits, 20, bits); test("|", "%20pbl|%*pbl", bits, 20, bits);
for (i = 0; i < ARRAY_SIZE(primes); ++i) set_bit(primes[i], bits); test("a28ac|a28ac", "%20pb|%*pb", bits, 20, bits); test("2-3,5,7,11,13,17,19|2-3,5,7,11,13,17,19", "%20pbl|%*pbl", bits, 20, bits);
bitmap_fill(bits, 20); test("fffff|fffff", "%20pb|%*pb", bits, 20, bits); test("0-19|0-19", "%20pbl|%*pbl", bits, 20, bits);
large_bitmap(kunittest);}
static voidnetdev_features(struct kunit *kunittest){}
struct page_flags_test { int width; int shift; int mask; const char *fmt; const char *name;};
static const struct page_flags_test pft[] = { {SECTIONS_WIDTH, SECTIONS_PGSHIFT, SECTIONS_MASK, "%d", "section"}, {NODES_WIDTH, NODES_PGSHIFT, NODES_MASK, "%d", "node"}, {ZONES_WIDTH, ZONES_PGSHIFT, ZONES_MASK, "%d", "zone"}, {LAST_CPUPID_WIDTH, LAST_CPUPID_PGSHIFT, LAST_CPUPID_MASK, "%#x", "lastcpupid"}, {KASAN_TAG_WIDTH, KASAN_TAG_PGSHIFT, KASAN_TAG_MASK, "%#x", "kasantag"},};
static voidpage_flags_test(struct kunit *kunittest, int section, int node, int zone, int last_cpupid, int kasan_tag, unsigned long flags, const char *name, char *cmp_buf){ unsigned long values[] = {section, node, zone, last_cpupid, kasan_tag}; unsigned long size; bool append = false; int i;
for (i = 0; i < ARRAY_SIZE(values); i++) flags |= (values[i] & pft[i].mask) << pft[i].shift;
size = scnprintf(cmp_buf, BUF_SIZE, "%#lx(", flags); if (flags & PAGEFLAGS_MASK) { size += scnprintf(cmp_buf + size, BUF_SIZE - size, "%s", name); append = true; }
for (i = 0; i < ARRAY_SIZE(pft); i++) { if (!pft[i].width) continue;
if (append) size += scnprintf(cmp_buf + size, BUF_SIZE - size, "|");
size += scnprintf(cmp_buf + size, BUF_SIZE - size, "%s=", pft[i].name); size += scnprintf(cmp_buf + size, BUF_SIZE - size, pft[i].fmt, values[i] & pft[i].mask); append = true; }
snprintf(cmp_buf + size, BUF_SIZE - size, ")");
test(cmp_buf, "%pGp", &flags);}
static voidflags(struct kunit *kunittest){ unsigned long flags; char *cmp_buffer; gfp_t gfp;
cmp_buffer = kunit_kmalloc(kunittest, BUF_SIZE, GFP_KERNEL); KUNIT_ASSERT_NOT_NULL(kunittest, cmp_buffer);
flags = 0; page_flags_test(kunittest, 0, 0, 0, 0, 0, flags, "", cmp_buffer);
flags = 1UL << NR_PAGEFLAGS; page_flags_test(kunittest, 0, 0, 0, 0, 0, flags, "", cmp_buffer);
flags |= 1UL << PG_uptodate | 1UL << PG_dirty | 1UL << PG_lru | 1UL << PG_active | 1UL << PG_swapbacked; page_flags_test(kunittest, 1, 1, 1, 0x1fffff, 1, flags, "uptodate|dirty|lru|active|swapbacked", cmp_buffer);
flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC; test("read|exec|mayread|maywrite|mayexec", "%pGv", &flags);
gfp = GFP_TRANSHUGE; test("GFP_TRANSHUGE", "%pGg", &gfp);
gfp = GFP_ATOMIC|__GFP_DMA; test("GFP_ATOMIC|GFP_DMA", "%pGg", &gfp);
gfp = __GFP_HIGH; test("__GFP_HIGH", "%pGg", &gfp);
/* Any flags not translated by the table should remain numeric */ gfp = ~__GFP_BITS_MASK; snprintf(cmp_buffer, BUF_SIZE, "%#lx", (unsigned long) gfp); test(cmp_buffer, "%pGg", &gfp);
snprintf(cmp_buffer, BUF_SIZE, "__GFP_HIGH|%#lx", (unsigned long) gfp); gfp |= __GFP_HIGH; test(cmp_buffer, "%pGg", &gfp);}
static void fwnode_pointer(struct kunit *kunittest){ const struct software_node first = { .name = "first" }; const struct software_node second = { .name = "second", .parent = &first }; const struct software_node third = { .name = "third", .parent = &second }; const struct software_node *group[] = { &first, &second, &third, NULL }; const char * const full_name_second = "first/second"; const char * const full_name_third = "first/second/third"; const char * const second_name = "second"; const char * const third_name = "third"; int rval;
rval = software_node_register_node_group(group); if (rval) { kunit_skip(kunittest, "cannot register softnodes; rval %d\n", rval); }
test(full_name_second, "%pfw", software_node_fwnode(&second)); test(full_name_third, "%pfw", software_node_fwnode(&third)); test(full_name_third, "%pfwf", software_node_fwnode(&third)); test(second_name, "%pfwP", software_node_fwnode(&second)); test(third_name, "%pfwP", software_node_fwnode(&third));
software_node_unregister_node_group(group);}
struct fourcc_struct { u32 code; const char *str;};
static void fourcc_pointer_test(struct kunit *kunittest, const struct fourcc_struct *fc, size_t n, const char *fmt){ size_t i;
for (i = 0; i < n; i++) test(fc[i].str, fmt, &fc[i].code);}
static void fourcc_pointer(struct kunit *kunittest){ static const struct fourcc_struct try_cc[] = { { 0x3231564e, "NV12 little-endian (0x3231564e)", }, { 0xb231564e, "NV12 big-endian (0xb231564e)", }, { 0x10111213, ".... little-endian (0x10111213)", }, { 0x20303159, "Y10 little-endian (0x20303159)", }, }; static const struct fourcc_struct try_ch[] = { { 0x41424344, "ABCD (0x41424344)", }, }; static const struct fourcc_struct try_chR[] = { { 0x41424344, "DCBA (0x44434241)", }, }; static const struct fourcc_struct try_cl[] = { { (__force u32)cpu_to_le32(0x41424344), "ABCD (0x41424344)", }, }; static const struct fourcc_struct try_cb[] = { { (__force u32)cpu_to_be32(0x41424344), "ABCD (0x41424344)", }, };
fourcc_pointer_test(kunittest, try_cc, ARRAY_SIZE(try_cc), "%p4cc"); fourcc_pointer_test(kunittest, try_ch, ARRAY_SIZE(try_ch), "%p4ch"); fourcc_pointer_test(kunittest, try_chR, ARRAY_SIZE(try_chR), "%p4chR"); fourcc_pointer_test(kunittest, try_cl, ARRAY_SIZE(try_cl), "%p4cl"); fourcc_pointer_test(kunittest, try_cb, ARRAY_SIZE(try_cb), "%p4cb");}
static voiderrptr(struct kunit *kunittest){ test("-1234", "%pe", ERR_PTR(-1234));
/* Check that %pe with a non-ERR_PTR gets treated as ordinary %p. */ BUILD_BUG_ON(IS_ERR(PTR)); test_hashed(kunittest, "%pe", PTR);
#ifdef CONFIG_SYMBOLIC_ERRNAME test("(-ENOTSOCK)", "(%pe)", ERR_PTR(-ENOTSOCK)); test("(-EAGAIN)", "(%pe)", ERR_PTR(-EAGAIN)); BUILD_BUG_ON(EAGAIN != EWOULDBLOCK); test("(-EAGAIN)", "(%pe)", ERR_PTR(-EWOULDBLOCK)); test("[-EIO ]", "[%-8pe]", ERR_PTR(-EIO)); test("[ -EIO]", "[%8pe]", ERR_PTR(-EIO)); test("-EPROBE_DEFER", "%pe", ERR_PTR(-EPROBE_DEFER));#endif}
static int printf_suite_init(struct kunit_suite *suite){ total_tests = 0;
alloced_buffer = kmalloc(BUF_SIZE + 2*PAD_SIZE, GFP_KERNEL); if (!alloced_buffer) return -ENOMEM; test_buffer = alloced_buffer + PAD_SIZE;
return 0;}
static void printf_suite_exit(struct kunit_suite *suite){ kfree(alloced_buffer);
kunit_info(suite, "ran %u tests\n", total_tests);}
static struct kunit_case printf_test_cases[] = { KUNIT_CASE(test_basic), KUNIT_CASE(test_number), KUNIT_CASE(test_string), KUNIT_CASE(hash_pointer), KUNIT_CASE(null_pointer), KUNIT_CASE(error_pointer), KUNIT_CASE(invalid_pointer), KUNIT_CASE(symbol_ptr), KUNIT_CASE(kernel_ptr), KUNIT_CASE(struct_resource), KUNIT_CASE(struct_range), KUNIT_CASE(addr), KUNIT_CASE(escaped_str), KUNIT_CASE(hex_string), KUNIT_CASE(mac), KUNIT_CASE(ip4), KUNIT_CASE(ip6), KUNIT_CASE(uuid), KUNIT_CASE(dentry), KUNIT_CASE(struct_va_format), KUNIT_CASE(time_and_date), KUNIT_CASE(struct_clk), KUNIT_CASE(bitmap), KUNIT_CASE(netdev_features), KUNIT_CASE(flags), KUNIT_CASE(errptr), KUNIT_CASE(fwnode_pointer), KUNIT_CASE(fourcc_pointer), {}};
static struct kunit_suite printf_test_suite = { .name = "printf", .suite_init = printf_suite_init, .suite_exit = printf_suite_exit, .test_cases = printf_test_cases,};
kunit_test_suite(printf_test_suite);
MODULE_AUTHOR("Rasmus Villemoes <linux@rasmusvillemoes.dk>");MODULE_DESCRIPTION("Test cases for printf facility");MODULE_LICENSE("GPL");