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-rw-r--r--fs/udf/udftime.c93
1 files changed, 44 insertions, 49 deletions
diff --git a/fs/udf/udftime.c b/fs/udf/udftime.c
index 85d8dbe843f1..b9f3198080e9 100644
--- a/fs/udf/udftime.c
+++ b/fs/udf/udftime.c
@@ -46,37 +46,36 @@
46#endif 46#endif
47 47
48/* How many days come before each month (0-12). */ 48/* How many days come before each month (0-12). */
49static const unsigned short int __mon_yday[2][13] = 49static const unsigned short int __mon_yday[2][13] = {
50{
51 /* Normal years. */ 50 /* Normal years. */
52 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, 51 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
53 /* Leap years. */ 52 /* Leap years. */
54 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } 53 {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366}
55}; 54};
56 55
57#define MAX_YEAR_SECONDS 69 56#define MAX_YEAR_SECONDS 69
58#define SPD 0x15180 /*3600*24*/ 57#define SPD 0x15180 /*3600*24 */
59#define SPY(y,l,s) (SPD * (365*y+l)+s) 58#define SPY(y,l,s) (SPD * (365*y+l)+s)
60 59
61static time_t year_seconds[MAX_YEAR_SECONDS]= { 60static time_t year_seconds[MAX_YEAR_SECONDS] = {
62/*1970*/ SPY( 0, 0,0), SPY( 1, 0,0), SPY( 2, 0,0), SPY( 3, 1,0), 61/*1970*/ SPY(0, 0, 0), SPY(1, 0, 0), SPY(2, 0, 0), SPY(3, 1, 0),
63/*1974*/ SPY( 4, 1,0), SPY( 5, 1,0), SPY( 6, 1,0), SPY( 7, 2,0), 62/*1974*/ SPY(4, 1, 0), SPY(5, 1, 0), SPY(6, 1, 0), SPY(7, 2, 0),
64/*1978*/ SPY( 8, 2,0), SPY( 9, 2,0), SPY(10, 2,0), SPY(11, 3,0), 63/*1978*/ SPY(8, 2, 0), SPY(9, 2, 0), SPY(10, 2, 0), SPY(11, 3, 0),
65/*1982*/ SPY(12, 3,0), SPY(13, 3,0), SPY(14, 3,0), SPY(15, 4,0), 64/*1982*/ SPY(12, 3, 0), SPY(13, 3, 0), SPY(14, 3, 0), SPY(15, 4, 0),
66/*1986*/ SPY(16, 4,0), SPY(17, 4,0), SPY(18, 4,0), SPY(19, 5,0), 65/*1986*/ SPY(16, 4, 0), SPY(17, 4, 0), SPY(18, 4, 0), SPY(19, 5, 0),
67/*1990*/ SPY(20, 5,0), SPY(21, 5,0), SPY(22, 5,0), SPY(23, 6,0), 66/*1990*/ SPY(20, 5, 0), SPY(21, 5, 0), SPY(22, 5, 0), SPY(23, 6, 0),
68/*1994*/ SPY(24, 6,0), SPY(25, 6,0), SPY(26, 6,0), SPY(27, 7,0), 67/*1994*/ SPY(24, 6, 0), SPY(25, 6, 0), SPY(26, 6, 0), SPY(27, 7, 0),
69/*1998*/ SPY(28, 7,0), SPY(29, 7,0), SPY(30, 7,0), SPY(31, 8,0), 68/*1998*/ SPY(28, 7, 0), SPY(29, 7, 0), SPY(30, 7, 0), SPY(31, 8, 0),
70/*2002*/ SPY(32, 8,0), SPY(33, 8,0), SPY(34, 8,0), SPY(35, 9,0), 69/*2002*/ SPY(32, 8, 0), SPY(33, 8, 0), SPY(34, 8, 0), SPY(35, 9, 0),
71/*2006*/ SPY(36, 9,0), SPY(37, 9,0), SPY(38, 9,0), SPY(39,10,0), 70/*2006*/ SPY(36, 9, 0), SPY(37, 9, 0), SPY(38, 9, 0), SPY(39, 10, 0),
72/*2010*/ SPY(40,10,0), SPY(41,10,0), SPY(42,10,0), SPY(43,11,0), 71/*2010*/ SPY(40, 10, 0), SPY(41, 10, 0), SPY(42, 10, 0), SPY(43, 11, 0),
73/*2014*/ SPY(44,11,0), SPY(45,11,0), SPY(46,11,0), SPY(47,12,0), 72/*2014*/ SPY(44, 11, 0), SPY(45, 11, 0), SPY(46, 11, 0), SPY(47, 12, 0),
74/*2018*/ SPY(48,12,0), SPY(49,12,0), SPY(50,12,0), SPY(51,13,0), 73/*2018*/ SPY(48, 12, 0), SPY(49, 12, 0), SPY(50, 12, 0), SPY(51, 13, 0),
75/*2022*/ SPY(52,13,0), SPY(53,13,0), SPY(54,13,0), SPY(55,14,0), 74/*2022*/ SPY(52, 13, 0), SPY(53, 13, 0), SPY(54, 13, 0), SPY(55, 14, 0),
76/*2026*/ SPY(56,14,0), SPY(57,14,0), SPY(58,14,0), SPY(59,15,0), 75/*2026*/ SPY(56, 14, 0), SPY(57, 14, 0), SPY(58, 14, 0), SPY(59, 15, 0),
77/*2030*/ SPY(60,15,0), SPY(61,15,0), SPY(62,15,0), SPY(63,16,0), 76/*2030*/ SPY(60, 15, 0), SPY(61, 15, 0), SPY(62, 15, 0), SPY(63, 16, 0),
78/*2034*/ SPY(64,16,0), SPY(65,16,0), SPY(66,16,0), SPY(67,17,0), 77/*2034*/ SPY(64, 16, 0), SPY(65, 16, 0), SPY(66, 16, 0), SPY(67, 17, 0),
79/*2038*/ SPY(68,17,0) 78/*2038*/ SPY(68, 17, 0)
80}; 79};
81 80
82extern struct timezone sys_tz; 81extern struct timezone sys_tz;
@@ -84,27 +83,23 @@ extern struct timezone sys_tz;
84#define SECS_PER_HOUR (60 * 60) 83#define SECS_PER_HOUR (60 * 60)
85#define SECS_PER_DAY (SECS_PER_HOUR * 24) 84#define SECS_PER_DAY (SECS_PER_HOUR * 24)
86 85
87time_t * 86time_t *udf_stamp_to_time(time_t * dest, long *dest_usec, kernel_timestamp src)
88udf_stamp_to_time(time_t *dest, long *dest_usec, kernel_timestamp src)
89{ 87{
90 int yday; 88 int yday;
91 uint8_t type = src.typeAndTimezone >> 12; 89 uint8_t type = src.typeAndTimezone >> 12;
92 int16_t offset; 90 int16_t offset;
93 91
94 if (type == 1) 92 if (type == 1) {
95 {
96 offset = src.typeAndTimezone << 4; 93 offset = src.typeAndTimezone << 4;
97 /* sign extent offset */ 94 /* sign extent offset */
98 offset = (offset >> 4); 95 offset = (offset >> 4);
99 if (offset == -2047) /* unspecified offset */ 96 if (offset == -2047) /* unspecified offset */
100 offset = 0; 97 offset = 0;
101 } 98 } else
102 else
103 offset = 0; 99 offset = 0;
104 100
105 if ((src.year < EPOCH_YEAR) || 101 if ((src.year < EPOCH_YEAR) ||
106 (src.year >= EPOCH_YEAR+MAX_YEAR_SECONDS)) 102 (src.year >= EPOCH_YEAR + MAX_YEAR_SECONDS)) {
107 {
108 *dest = -1; 103 *dest = -1;
109 *dest_usec = -1; 104 *dest_usec = -1;
110 return NULL; 105 return NULL;
@@ -112,16 +107,16 @@ udf_stamp_to_time(time_t *dest, long *dest_usec, kernel_timestamp src)
112 *dest = year_seconds[src.year - EPOCH_YEAR]; 107 *dest = year_seconds[src.year - EPOCH_YEAR];
113 *dest -= offset * 60; 108 *dest -= offset * 60;
114 109
115 yday = ((__mon_yday[__isleap (src.year)] 110 yday = ((__mon_yday[__isleap(src.year)]
116 [src.month-1]) + (src.day-1)); 111 [src.month - 1]) + (src.day - 1));
117 *dest += ( ( (yday* 24) + src.hour ) * 60 + src.minute ) * 60 + src.second; 112 *dest += (((yday * 24) + src.hour) * 60 + src.minute) * 60 + src.second;
118 *dest_usec = src.centiseconds * 10000 + src.hundredsOfMicroseconds * 100 + src.microseconds; 113 *dest_usec =
114 src.centiseconds * 10000 + src.hundredsOfMicroseconds * 100 +
115 src.microseconds;
119 return dest; 116 return dest;
120} 117}
121 118
122 119kernel_timestamp *udf_time_to_stamp(kernel_timestamp * dest, struct timespec ts)
123kernel_timestamp *
124udf_time_to_stamp(kernel_timestamp *dest, struct timespec ts)
125{ 120{
126 long int days, rem, y; 121 long int days, rem, y;
127 const unsigned short int *ip; 122 const unsigned short int *ip;
@@ -146,28 +141,28 @@ udf_time_to_stamp(kernel_timestamp *dest, struct timespec ts)
146#define DIV(a,b) ((a) / (b) - ((a) % (b) < 0)) 141#define DIV(a,b) ((a) / (b) - ((a) % (b) < 0))
147#define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400)) 142#define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
148 143
149 while (days < 0 || days >= (__isleap(y) ? 366 : 365)) 144 while (days < 0 || days >= (__isleap(y) ? 366 : 365)) {
150 {
151 long int yg = y + days / 365 - (days % 365 < 0); 145 long int yg = y + days / 365 - (days % 365 < 0);
152 146
153 /* Adjust DAYS and Y to match the guessed year. */ 147 /* Adjust DAYS and Y to match the guessed year. */
154 days -= ((yg - y) * 365 148 days -= ((yg - y) * 365 + LEAPS_THRU_END_OF(yg - 1)
155 + LEAPS_THRU_END_OF (yg - 1) 149 - LEAPS_THRU_END_OF(y - 1));
156 - LEAPS_THRU_END_OF (y - 1));
157 y = yg; 150 y = yg;
158 } 151 }
159 dest->year = y; 152 dest->year = y;
160 ip = __mon_yday[__isleap(y)]; 153 ip = __mon_yday[__isleap(y)];
161 for (y = 11; days < (long int) ip[y]; --y) 154 for (y = 11; days < (long int)ip[y]; --y)
162 continue; 155 continue;
163 days -= ip[y]; 156 days -= ip[y];
164 dest->month = y + 1; 157 dest->month = y + 1;
165 dest->day = days + 1; 158 dest->day = days + 1;
166 159
167 dest->centiseconds = ts.tv_nsec / 10000000; 160 dest->centiseconds = ts.tv_nsec / 10000000;
168 dest->hundredsOfMicroseconds = (ts.tv_nsec / 1000 - dest->centiseconds * 10000) / 100; 161 dest->hundredsOfMicroseconds =
169 dest->microseconds = (ts.tv_nsec / 1000 - dest->centiseconds * 10000 - 162 (ts.tv_nsec / 1000 - dest->centiseconds * 10000) / 100;
170 dest->hundredsOfMicroseconds * 100); 163 dest->microseconds =
164 (ts.tv_nsec / 1000 - dest->centiseconds * 10000 -
165 dest->hundredsOfMicroseconds * 100);
171 return dest; 166 return dest;
172} 167}
173 168
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-19 17:13:13 -0500