ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libeio/eio.c
(Generate patch)

Comparing libeio/eio.c (file contents):
Revision 1.30 by root, Wed Jun 3 12:24:49 2009 UTC vs.
Revision 1.54 by root, Tue Feb 23 14:32:45 2010 UTC

1/* 1/*
2 * libeio implementation 2 * libeio implementation
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
49#include <stdlib.h> 49#include <stdlib.h>
50#include <string.h> 50#include <string.h>
51#include <errno.h> 51#include <errno.h>
52#include <sys/types.h> 52#include <sys/types.h>
53#include <sys/stat.h> 53#include <sys/stat.h>
54#include <sys/statvfs.h>
54#include <limits.h> 55#include <limits.h>
55#include <fcntl.h> 56#include <fcntl.h>
56#include <assert.h> 57#include <assert.h>
57 58
58#ifndef EIO_FINISH 59#ifndef EIO_FINISH
… …
68#endif 69#endif
69 70
70#ifdef _WIN32 71#ifdef _WIN32
71 72
72 /*doh*/ 73 /*doh*/
73
74#else 74#else
75 75
76# include "config.h" 76# include "config.h"
77# include <sys/time.h> 77# include <sys/time.h>
78# include <sys/select.h> 78# include <sys/select.h>
79# include <sys/mman.h>
79# include <unistd.h> 80# include <unistd.h>
80# include <utime.h> 81# include <utime.h>
81# include <signal.h> 82# include <signal.h>
82# include <dirent.h> 83# include <dirent.h>
83 84
85/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
86# if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
87# define _DIRENT_HAVE_D_TYPE /* sigh */
88# define D_INO(de) (de)->d_fileno
89# define D_NAMLEN(de) (de)->d_namlen
90# elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
91# define D_INO(de) (de)->d_ino
92# endif
93
94#ifdef _D_EXACT_NAMLEN
95# undef D_NAMLEN
96# define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
97#endif
98
99# ifdef _DIRENT_HAVE_D_TYPE
100# define D_TYPE(de) (de)->d_type
101# endif
102
84# ifndef EIO_STRUCT_DIRENT 103# ifndef EIO_STRUCT_DIRENT
85# define EIO_STRUCT_DIRENT struct dirent 104# define EIO_STRUCT_DIRENT struct dirent
86# endif 105# endif
87 106
88#endif 107#endif
89 108
90#if HAVE_SENDFILE 109#if HAVE_SENDFILE
91# if __linux 110# if __linux
92# include <sys/sendfile.h> 111# include <sys/sendfile.h>
93# elif __freebsd 112# elif __FreeBSD__ || defined __APPLE__
94# include <sys/socket.h> 113# include <sys/socket.h>
95# include <sys/uio.h> 114# include <sys/uio.h>
96# elif __hpux 115# elif __hpux
97# include <sys/socket.h> 116# include <sys/socket.h>
98# elif __solaris /* not yet */ 117# elif __solaris
99# include <sys/sendfile.h> 118# include <sys/sendfile.h>
100# else 119# else
101# error sendfile support requested but not available 120# error sendfile support requested but not available
102# endif 121# endif
103#endif 122#endif
104 123
124#ifndef D_TYPE
125# define D_TYPE(de) 0
126#endif
127#ifndef D_INO
128# define D_INO(de) 0
129#endif
130#ifndef D_NAMLEN
131# define D_NAMLEN(de) strlen ((de)->d_name)
132#endif
133
105/* number of seconds after which an idle threads exit */ 134/* number of seconds after which an idle threads exit */
106#define IDLE_TIMEOUT 10 135#define IDLE_TIMEOUT 10
107 136
108/* used for struct dirent, AIX doesn't provide it */ 137/* used for struct dirent, AIX doesn't provide it */
109#ifndef NAME_MAX 138#ifndef NAME_MAX
110# define NAME_MAX 4096 139# define NAME_MAX 4096
140#endif
141
142/* used for readlink etc. */
143#ifndef PATH_MAX
144# define PATH_MAX 4096
111#endif 145#endif
112 146
113/* buffer size for various temporary buffers */ 147/* buffer size for various temporary buffers */
114#define EIO_BUFSIZE 65536 148#define EIO_BUFSIZE 65536
115 149
… …
159 if (wrk->dirp) \ 193 if (wrk->dirp) \
160 { \ 194 { \
161 closedir (wrk->dirp); \ 195 closedir (wrk->dirp); \
162 wrk->dirp = 0; \ 196 wrk->dirp = 0; \
163 } 197 }
198
164#define ETP_WORKER_COMMON \ 199#define ETP_WORKER_COMMON \
165 void *dbuf; \ 200 void *dbuf; \
166 DIR *dirp; 201 DIR *dirp;
167 202
168/*****************************************************************************/ 203/*****************************************************************************/
169 204
170#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) 205#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
171 206
172/* calculcate time difference in ~1/EIO_TICKS of a second */ 207/* calculate time difference in ~1/EIO_TICKS of a second */
173static int tvdiff (struct timeval *tv1, struct timeval *tv2) 208static int tvdiff (struct timeval *tv1, struct timeval *tv2)
174{ 209{
175 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS 210 return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
176 + ((tv2->tv_usec - tv1->tv_usec) >> 10); 211 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
177} 212}
… …
569} 604}
570 605
571static void etp_set_max_poll_time (double nseconds) 606static void etp_set_max_poll_time (double nseconds)
572{ 607{
573 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 608 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
574 max_poll_time = nseconds; 609 max_poll_time = nseconds * EIO_TICKS;
575 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 610 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
576} 611}
577 612
578static void etp_set_max_poll_reqs (unsigned int maxreqs) 613static void etp_set_max_poll_reqs (unsigned int maxreqs)
579{ 614{
… …
838 if (!res || errno != ENOSYS) 873 if (!res || errno != ENOSYS)
839 return res; 874 return res;
840#endif 875#endif
841 876
842 /* even though we could play tricks with the flags, it's better to always 877 /* even though we could play tricks with the flags, it's better to always
843 * call fdatasync, as thta matches the expectation of it's users best */ 878 * call fdatasync, as that matches the expectation of its users best */
844 return fdatasync (fd); 879 return fdatasync (fd);
845} 880}
846 881
847#if !HAVE_READAHEAD 882#if !HAVE_READAHEAD
848# undef readahead 883# undef readahead
… …
880 915
881#if HAVE_SENDFILE 916#if HAVE_SENDFILE
882# if __linux 917# if __linux
883 res = sendfile (ofd, ifd, &offset, count); 918 res = sendfile (ofd, ifd, &offset, count);
884 919
885# elif __freebsd 920# elif __FreeBSD__
886 /* 921 /*
887 * Of course, the freebsd sendfile is a dire hack with no thoughts 922 * Of course, the freebsd sendfile is a dire hack with no thoughts
888 * wasted on making it similar to other I/O functions. 923 * wasted on making it similar to other I/O functions.
889 */ 924 */
890 { 925 {
891 off_t sbytes; 926 off_t sbytes;
892 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 927 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
893 928
894 if (res < 0 && sbytes) 929 #if 0 /* according to the manpage, this is correct, but broken behaviour */
895 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 930 /* freebsd' sendfile will return 0 on success */
931 /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
932 /* not on e.g. EIO or EPIPE - sounds broken */
933 if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
934 res = sbytes;
935 #endif
936
937 /* according to source inspection, this is correct, and useful behaviour */
938 if (sbytes)
939 res = sbytes;
940 }
941
942# elif defined (__APPLE__)
943
944 {
945 off_t sbytes = count;
946 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
947
948 /* according to the manpage, sbytes is always valid */
949 if (sbytes)
896 res = sbytes; 950 res = sbytes;
897 } 951 }
898 952
899# elif __hpux 953# elif __hpux
900 res = sendfile (ofd, ifd, offset, count, 0, 0); 954 res = sendfile (ofd, ifd, offset, count, 0, 0);
… …
914 if (res < 0 && sbytes) 968 if (res < 0 && sbytes)
915 res = sbytes; 969 res = sbytes;
916 } 970 }
917 971
918# endif 972# endif
973
974#elif defined (_WIN32)
975
976 /* does not work, just for documentation of what would need to be done */
977 {
978 HANDLE h = TO_SOCKET (ifd);
979 SetFilePointer (h, offset, 0, FILE_BEGIN);
980 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
981 }
982
919#else 983#else
920 res = -1; 984 res = -1;
921 errno = ENOSYS; 985 errno = ENOSYS;
922#endif 986#endif
923 987
924 if (res < 0 988 if (res < 0
925 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 989 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
990 /* BSDs */
991#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
992 || errno == ENOTSUP
993#endif
994 || errno == EOPNOTSUPP /* BSDs */
926#if __solaris 995#if __solaris
927 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 996 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
928#endif 997#endif
929 ) 998 )
930 ) 999 )
… …
961 } 1030 }
962 1031
963 return res; 1032 return res;
964} 1033}
965 1034
1035static signed char
1036eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1037{
1038 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1039 : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0;
1040}
1041
1042#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1043
1044#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
1045#define EIO_SORT_FAST 60 /* when to only use insertion sort */
1046
1047static void
1048eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)
1049{
1050 unsigned char bits [9 + sizeof (ino_t) * 8];
1051 unsigned char *bit = bits;
1052
1053 assert (CHAR_BIT == 8);
1054 assert (sizeof (eio_dirent) * 8 < 256);
1055 assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */
1056 assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */
1057
1058 if (size <= EIO_SORT_FAST)
1059 return;
1060
1061 /* first prepare an array of bits to test in our radix sort */
1062 /* try to take endianness into account, as well as differences in ino_t sizes */
1063 /* inode_bits must contain all inodes ORed together */
1064 /* which is used to skip bits that are 0 everywhere, which is very common */
1065 {
1066 ino_t endianness;
1067 int i, j;
1068
1069 /* we store the byte offset of byte n into byte n of "endianness" */
1070 for (i = 0; i < sizeof (ino_t); ++i)
1071 ((unsigned char *)&endianness)[i] = i;
1072
1073 *bit++ = 0;
1074
1075 for (i = 0; i < sizeof (ino_t); ++i)
1076 {
1077 /* shifting off the byte offsets out of "endianness" */
1078 int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
1079 endianness >>= 8;
1080
1081 for (j = 0; j < 8; ++j)
1082 if (inode_bits & (((ino_t)1) << (i * 8 + j)))
1083 *bit++ = offs + j;
1084 }
1085
1086 for (j = 0; j < 8; ++j)
1087 if (score_bits & (1 << j))
1088 *bit++ = offsetof (eio_dirent, score) * 8 + j;
1089 }
1090
1091 /* now actually do the sorting (a variant of MSD radix sort) */
1092 {
1093 eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base;
1094 eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end;
1095 unsigned char *bit_stk [9 + sizeof (ino_t) * 8];
1096 int stk_idx = 0;
1097
1098 base_stk [stk_idx] = dents;
1099 end_stk [stk_idx] = dents + size;
1100 bit_stk [stk_idx] = bit - 1;
1101
1102 do
1103 {
1104 base = base_stk [stk_idx];
1105 end = end_stk [stk_idx];
1106 bit = bit_stk [stk_idx];
1107
1108 for (;;)
1109 {
1110 unsigned char O = *bit >> 3;
1111 unsigned char M = 1 << (*bit & 7);
1112
1113 eio_dirent *a = base;
1114 eio_dirent *b = end;
1115
1116 if (b - a < EIO_SORT_CUTOFF)
1117 break;
1118
1119 /* now bit-partition the array on the bit */
1120 /* this ugly asymmetric loop seems to perform much better than typical */
1121 /* partition algos found in the literature */
1122 do
1123 if (!(((unsigned char *)a)[O] & M))
1124 ++a;
1125 else if (!(((unsigned char *)--b)[O] & M))
1126 {
1127 eio_dirent tmp = *a; *a = *b; *b = tmp;
1128 ++a;
1129 }
1130 while (b > a);
1131
1132 /* next bit, or stop, if no bits left in this path */
1133 if (!*--bit)
1134 break;
1135
1136 base_stk [stk_idx] = a;
1137 end_stk [stk_idx] = end;
1138 bit_stk [stk_idx] = bit;
1139 ++stk_idx;
1140
1141 end = a;
1142 }
1143 }
1144 while (stk_idx--);
1145 }
1146}
1147
1148static void
1149eio_dent_insertion_sort (eio_dirent *dents, int size)
1150{
1151 /* first move the smallest element to the front, to act as a sentinel */
1152 {
1153 int i;
1154 eio_dirent *min = dents;
1155
1156 /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
1157 for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
1158 if (EIO_DENT_CMP (dents [i], <, *min))
1159 min = &dents [i];
1160
1161 /* swap elements 0 and j (minimum) */
1162 {
1163 eio_dirent tmp = *dents; *dents = *min; *min = tmp;
1164 }
1165 }
1166
1167 /* then do standard insertion sort, assuming that all elements are >= dents [0] */
1168 {
1169 eio_dirent *i, *j;
1170
1171 for (i = dents + 1; i < dents + size; ++i)
1172 {
1173 eio_dirent value = *i;
1174
1175 for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
1176 j [1] = j [0];
1177
1178 j [1] = value;
1179 }
1180 }
1181}
1182
1183static void
1184eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)
1185{
1186 if (size <= 1)
1187 return; /* our insertion sort relies on size > 0 */
1188
1189 /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
1190 /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
1191 eio_dent_radix_sort (dents, size, score_bits, inode_bits);
1192
1193 /* use an insertion sort at the end, or for small arrays, */
1194 /* as insertion sort is more efficient for small partitions */
1195 eio_dent_insertion_sort (dents, size);
1196}
1197
966/* read a full directory */ 1198/* read a full directory */
967static void 1199static void
968eio__scandir (eio_req *req, etp_worker *self) 1200eio__scandir (eio_req *req, etp_worker *self)
969{ 1201{
970 DIR *dirp; 1202 DIR *dirp;
971 EIO_STRUCT_DIRENT *entp; 1203 EIO_STRUCT_DIRENT *entp;
972 char *name, *names; 1204 char *name, *names;
973 int memlen = 4096; 1205 int namesalloc = 4096;
974 int memofs = 0; 1206 int namesoffs = 0;
1207 int flags = req->int1;
1208 eio_dirent *dents = 0;
1209 int dentalloc = 128;
975 int res = 0; 1210 int dentoffs = 0;
1211 ino_t inode_bits = 0;
1212
1213 req->result = -1;
1214
1215 if (!(flags & EIO_READDIR_DENTS))
1216 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
976 1217
977 X_LOCK (wrklock); 1218 X_LOCK (wrklock);
978 /* the corresponding closedir is in ETP_WORKER_CLEAR */ 1219 /* the corresponding closedir is in ETP_WORKER_CLEAR */
979 self->dirp = dirp = opendir (req->ptr1); 1220 self->dirp = dirp = opendir (req->ptr1);
980 req->flags |= EIO_FLAG_PTR2_FREE; 1221 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1222 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
981 req->ptr2 = names = malloc (memlen); 1223 req->ptr2 = names = malloc (namesalloc);
982 X_UNLOCK (wrklock); 1224 X_UNLOCK (wrklock);
983 1225
984 if (dirp && names) 1226 if (dirp && names && (!flags || dents))
985 for (;;) 1227 for (;;)
986 { 1228 {
987 errno = 0; 1229 errno = 0;
988 entp = readdir (dirp); 1230 entp = readdir (dirp);
989 1231
990 if (!entp) 1232 if (!entp)
1233 {
1234 if (errno)
1235 break;
1236
1237 /* sort etc. */
1238 req->int1 = flags;
1239 req->result = dentoffs;
1240
1241 if (flags & EIO_READDIR_STAT_ORDER)
1242 eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */
1243 else if (flags & EIO_READDIR_DIRS_FIRST)
1244 if (flags & EIO_READDIR_FOUND_UNKNOWN)
1245 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1246 else
1247 {
1248 /* in this case, all is known, and we just put dirs first and sort them */
1249 eio_dirent *oth = dents + dentoffs;
1250 eio_dirent *dir = dents;
1251
1252 /* now partition dirs to the front, and non-dirs to the back */
1253 /* by walking from both sides and swapping if necessary */
1254 /* also clear score, so it doesn't influence sorting */
1255 while (oth > dir)
1256 {
1257 if (dir->type == EIO_DT_DIR)
1258 ++dir;
1259 else if ((--oth)->type == EIO_DT_DIR)
1260 {
1261 eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
1262
1263 ++dir;
1264 }
1265 }
1266
1267 /* now sort the dirs only */
1268 eio_dent_sort (dents, dir - dents, 0, inode_bits);
1269 }
1270
991 break; 1271 break;
1272 }
992 1273
1274 /* now add the entry to our list(s) */
993 name = entp->d_name; 1275 name = entp->d_name;
994 1276
1277 /* skip . and .. entries */
995 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 1278 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
996 { 1279 {
997 int len = strlen (name) + 1; 1280 int len = D_NAMLEN (entp) + 1;
998 1281
999 res++; 1282 while (expect_false (namesoffs + len > namesalloc))
1000
1001 while (memofs + len > memlen)
1002 { 1283 {
1003 memlen *= 2; 1284 namesalloc *= 2;
1004 X_LOCK (wrklock); 1285 X_LOCK (wrklock);
1005 req->ptr2 = names = realloc (names, memlen); 1286 req->ptr2 = names = realloc (names, namesalloc);
1006 X_UNLOCK (wrklock); 1287 X_UNLOCK (wrklock);
1007 1288
1008 if (!names) 1289 if (!names)
1009 break; 1290 break;
1010 } 1291 }
1011 1292
1012 memcpy (names + memofs, name, len); 1293 memcpy (names + namesoffs, name, len);
1294
1295 if (dents)
1296 {
1297 struct eio_dirent *ent;
1298
1299 if (expect_false (dentoffs == dentalloc))
1300 {
1301 dentalloc *= 2;
1302 X_LOCK (wrklock);
1303 req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
1304 X_UNLOCK (wrklock);
1305
1306 if (!dents)
1307 break;
1308 }
1309
1310 ent = dents + dentoffs;
1311
1312 ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
1313 ent->namelen = len - 1;
1314 ent->inode = D_INO (entp);
1315
1316 inode_bits |= ent->inode;
1317
1318 switch (D_TYPE (entp))
1319 {
1320 default:
1321 ent->type = EIO_DT_UNKNOWN;
1322 flags |= EIO_READDIR_FOUND_UNKNOWN;
1323 break;
1324
1325 #ifdef DT_FIFO
1326 case DT_FIFO: ent->type = EIO_DT_FIFO; break;
1327 #endif
1328 #ifdef DT_CHR
1329 case DT_CHR: ent->type = EIO_DT_CHR; break;
1330 #endif
1331 #ifdef DT_MPC
1332 case DT_MPC: ent->type = EIO_DT_MPC; break;
1333 #endif
1334 #ifdef DT_DIR
1335 case DT_DIR: ent->type = EIO_DT_DIR; break;
1336 #endif
1337 #ifdef DT_NAM
1338 case DT_NAM: ent->type = EIO_DT_NAM; break;
1339 #endif
1340 #ifdef DT_BLK
1341 case DT_BLK: ent->type = EIO_DT_BLK; break;
1342 #endif
1343 #ifdef DT_MPB
1344 case DT_MPB: ent->type = EIO_DT_MPB; break;
1345 #endif
1346 #ifdef DT_REG
1347 case DT_REG: ent->type = EIO_DT_REG; break;
1348 #endif
1349 #ifdef DT_NWK
1350 case DT_NWK: ent->type = EIO_DT_NWK; break;
1351 #endif
1352 #ifdef DT_CMP
1353 case DT_CMP: ent->type = EIO_DT_CMP; break;
1354 #endif
1355 #ifdef DT_LNK
1356 case DT_LNK: ent->type = EIO_DT_LNK; break;
1357 #endif
1358 #ifdef DT_SOCK
1359 case DT_SOCK: ent->type = EIO_DT_SOCK; break;
1360 #endif
1361 #ifdef DT_DOOR
1362 case DT_DOOR: ent->type = EIO_DT_DOOR; break;
1363 #endif
1364 #ifdef DT_WHT
1365 case DT_WHT: ent->type = EIO_DT_WHT; break;
1366 #endif
1367 }
1368
1369 ent->score = 7;
1370
1371 if (flags & EIO_READDIR_DIRS_FIRST)
1372 {
1373 if (ent->type == EIO_DT_UNKNOWN)
1374 {
1375 if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
1376 ent->score = 1;
1377 else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
1378 ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
1379 }
1380 else if (ent->type == EIO_DT_DIR)
1381 ent->score = 0;
1382 }
1383 }
1384
1013 memofs += len; 1385 namesoffs += len;
1386 ++dentoffs;
1387 }
1388
1389 if (EIO_CANCELLED (req))
1390 {
1391 errno = ECANCELED;
1392 break;
1014 } 1393 }
1015 } 1394 }
1016
1017 if (errno)
1018 res = -1;
1019
1020 req->result = res;
1021} 1395}
1022 1396
1023#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) 1397#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1024# undef msync
1025# define msync(a,b,c) ((errno = ENOSYS), -1) 1398# define eio__msync(a,b,c) ((errno = ENOSYS), -1)
1399#else
1400
1401int
1402eio__msync (void *mem, size_t len, int flags)
1403{
1404 if (EIO_MS_ASYNC != MS_SYNC
1405 || EIO_MS_INVALIDATE != MS_INVALIDATE
1406 || EIO_MS_SYNC != MS_SYNC)
1407 {
1408 flags = 0
1409 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1410 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1411 | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1412 }
1413
1414 return msync (mem, len, flags);
1415}
1416
1026#endif 1417#endif
1027 1418
1028int 1419int
1029eio__mtouch (void *mem, size_t len, int flags) 1420eio__mtouch (void *mem, size_t len, int flags)
1030{ 1421{
… …
1037 1428
1038 if (!page) 1429 if (!page)
1039 page = sysconf (_SC_PAGESIZE); 1430 page = sysconf (_SC_PAGESIZE);
1040#endif 1431#endif
1041 1432
1433 /* round down to start of page, although this is probably useless */
1042 addr &= ~(page - 1); /* assume page size is always a power of two */ 1434 addr &= ~(page - 1); /* assume page size is always a power of two */
1043 1435
1044 if (addr < end) 1436 if (addr < end)
1045 if (flags) /* modify */ 1437 if (flags & EIO_MT_MODIFY) /* modify */
1046 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); 1438 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1047 else 1439 else
1048 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); 1440 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1049 1441
1050 return 0; 1442 return 0;
… …
1198 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 1590 case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1199 req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; 1591 req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1200 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); 1592 case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1201 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; 1593 req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1202 1594
1595 case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1596 req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1597 case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
1598 req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
1599
1203 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; 1600 case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1204 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; 1601 case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1205 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; 1602 case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
1206 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; 1603 case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1207 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; 1604 case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
… …
1216 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; 1613 case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1217 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; 1614 case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1218 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; 1615 case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1219 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; 1616 case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;
1220 1617
1221 case EIO_READLINK: ALLOC (NAME_MAX); 1618 case EIO_READLINK: ALLOC (PATH_MAX);
1222 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; 1619 req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1223 1620
1224 case EIO_SYNC: req->result = 0; sync (); break; 1621 case EIO_SYNC: req->result = 0; sync (); break;
1225 case EIO_FSYNC: req->result = fsync (req->int1); break; 1622 case EIO_FSYNC: req->result = fsync (req->int1); break;
1226 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; 1623 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1227 case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; 1624 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
1228 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; 1625 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
1229 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; 1626 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1230 1627
1231 case EIO_READDIR: eio__scandir (req, self); break; 1628 case EIO_READDIR: eio__scandir (req, self); break;
1232 1629
… …
1354eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) 1751eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
1355{ 1752{
1356 REQ (EIO_FSTAT); req->int1 = fd; SEND; 1753 REQ (EIO_FSTAT); req->int1 = fd; SEND;
1357} 1754}
1358 1755
1756eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
1757{
1758 REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
1759}
1760
1359eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) 1761eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
1360{ 1762{
1361 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; 1763 REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
1362} 1764}
1363 1765
… …
1435eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) 1837eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
1436{ 1838{
1437 return eio__1path (EIO_LSTAT, path, pri, cb, data); 1839 return eio__1path (EIO_LSTAT, path, pri, cb, data);
1438} 1840}
1439 1841
1842eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
1843{
1844 return eio__1path (EIO_STATVFS, path, pri, cb, data);
1845}
1846
1440eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) 1847eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
1441{ 1848{
1442 return eio__1path (EIO_UNLINK, path, pri, cb, data); 1849 return eio__1path (EIO_UNLINK, path, pri, cb, data);
1443} 1850}
1444 1851
1445eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) 1852eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
1446{ 1853{
1447 return eio__1path (EIO_RMDIR, path, pri, cb, data); 1854 return eio__1path (EIO_RMDIR, path, pri, cb, data);
1448} 1855}
1449 1856
1450eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data) 1857eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
1451{ 1858{
1452 return eio__1path (EIO_READDIR, path, pri, cb, data); 1859 REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1453} 1860}
1454 1861
1455eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) 1862eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1456{ 1863{
1457 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; 1864 REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;
… …
1546/* misc garbage */ 1953/* misc garbage */
1547 1954
1548ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) 1955ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1549{ 1956{
1550 etp_worker wrk; 1957 etp_worker wrk;
1958 ssize_t ret;
1551 1959
1552 wrk.dbuf = 0; 1960 wrk.dbuf = 0;
1553 1961
1554 eio__sendfile (ofd, ifd, offset, count, &wrk); 1962 ret = eio__sendfile (ofd, ifd, offset, count, &wrk);
1555 1963
1556 if (wrk.dbuf) 1964 if (wrk.dbuf)
1557 free (wrk.dbuf); 1965 free (wrk.dbuf);
1558}
1559 1966
1967 return ret;
1968}
1969

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines