diff options
Diffstat (limited to 'lib/test_printf.c')
| -rw-r--r-- | lib/test_printf.c | 85 |
1 files changed, 80 insertions, 5 deletions
diff --git a/lib/test_printf.c b/lib/test_printf.c index 71ebfa43ad05..659b6cc0d483 100644 --- a/lib/test_printf.c +++ b/lib/test_printf.c @@ -9,6 +9,7 @@ #include <linux/module.h> #include <linux/printk.h> #include <linux/random.h> +#include <linux/rtc.h> #include <linux/slab.h> #include <linux/string.h> @@ -204,8 +205,9 @@ test_string(void) #if BITS_PER_LONG == 64 #define PTR_WIDTH 16 -#define PTR ((void *)0xffff0123456789ab) +#define PTR ((void *)0xffff0123456789abUL) #define PTR_STR "ffff0123456789ab" +#define PTR_VAL_NO_CRNG "(____ptrval____)" #define ZEROS "00000000" /* hex 32 zero bits */ static int __init @@ -216,7 +218,16 @@ plain_format(void) nchars = snprintf(buf, PLAIN_BUF_SIZE, "%p", PTR); - if (nchars != PTR_WIDTH || strncmp(buf, ZEROS, strlen(ZEROS)) != 0) + if (nchars != PTR_WIDTH) + return -1; + + if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) { + pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"", + PTR_VAL_NO_CRNG); + return 0; + } + + if (strncmp(buf, ZEROS, strlen(ZEROS)) != 0) return -1; return 0; @@ -227,6 +238,7 @@ plain_format(void) #define PTR_WIDTH 8 #define PTR ((void *)0x456789ab) #define PTR_STR "456789ab" +#define PTR_VAL_NO_CRNG "(ptrval)" static int __init plain_format(void) @@ -238,14 +250,36 @@ plain_format(void) #endif /* BITS_PER_LONG == 64 */ static int __init +plain_hash_to_buffer(const void *p, char *buf, size_t len) +{ + int nchars; + + nchars = snprintf(buf, len, "%p", p); + + if (nchars != PTR_WIDTH) + return -1; + + if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) { + pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"", + PTR_VAL_NO_CRNG); + return 0; + } + + return 0; +} + + +static int __init plain_hash(void) { char buf[PLAIN_BUF_SIZE]; - int nchars; + int ret; - nchars = snprintf(buf, PLAIN_BUF_SIZE, "%p", PTR); + ret = plain_hash_to_buffer(PTR, buf, PLAIN_BUF_SIZE); + if (ret) + return ret; - if (nchars != PTR_WIDTH || strncmp(buf, PTR_STR, PTR_WIDTH) == 0) + if (strncmp(buf, PTR_STR, PTR_WIDTH) == 0) return -1; return 0; @@ -275,6 +309,23 @@ plain(void) } static void __init +test_hashed(const char *fmt, const void *p) +{ + char buf[PLAIN_BUF_SIZE]; + int ret; + + /* + * No need to increase failed test counter since this is assumed + * to be called after plain(). + */ + ret = plain_hash_to_buffer(p, buf, PLAIN_BUF_SIZE); + if (ret) + return; + + test(buf, fmt, p); +} + +static void __init symbol_ptr(void) { } @@ -399,6 +450,29 @@ struct_va_format(void) } static void __init +struct_rtc_time(void) +{ + /* 1543210543 */ + const struct rtc_time tm = { + .tm_sec = 43, + .tm_min = 35, + .tm_hour = 5, + .tm_mday = 26, + .tm_mon = 10, + .tm_year = 118, + }; + + test_hashed("%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); +} + +static void __init struct_clk(void) { } @@ -509,6 +583,7 @@ test_pointer(void) uuid(); dentry(); struct_va_format(); + struct_rtc_time(); struct_clk(); bitmap(); netdev_features(); |