… | |
… | |
73 | #else |
73 | #else |
74 | |
74 | |
75 | # include "config.h" |
75 | # include "config.h" |
76 | # include <sys/time.h> |
76 | # include <sys/time.h> |
77 | # include <sys/select.h> |
77 | # include <sys/select.h> |
|
|
78 | # include <sys/mman.h> |
78 | # include <unistd.h> |
79 | # include <unistd.h> |
79 | # include <utime.h> |
80 | # include <utime.h> |
80 | # include <signal.h> |
81 | # include <signal.h> |
81 | # include <dirent.h> |
82 | # include <dirent.h> |
82 | |
83 | |
… | |
… | |
989 | } |
990 | } |
990 | |
991 | |
991 | return res; |
992 | return res; |
992 | } |
993 | } |
993 | |
994 | |
994 | static int |
995 | static signed char |
995 | eio_dent_cmp (const void *a_, const void *b_) |
996 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
996 | { |
997 | { |
997 | const eio_dirent *a = (const eio_dirent *)a_; |
998 | return b->score - a->score ? b->score - a->score /* works because our signed char is always 0..100 */ |
998 | const eio_dirent *b = (const eio_dirent *)b_; |
|
|
999 | |
|
|
1000 | return (int)b->score - (int)a->score ? (int)b->score - (int)a->score |
|
|
1001 | : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; /* int might be < ino_t */ |
999 | : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; |
|
|
1000 | } |
|
|
1001 | |
|
|
1002 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
|
|
1003 | #define EIO_DENT_NUM_SCORES 9 |
|
|
1004 | |
|
|
1005 | #define EIO_QSORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
|
|
1006 | #define EIO_QSORT_SKIP 60 /* when to skip qsort completely */ |
|
|
1007 | |
|
|
1008 | static void |
|
|
1009 | eio_dent_sort (eio_dirent *dents, int size) |
|
|
1010 | { |
|
|
1011 | if (size <= 1) |
|
|
1012 | return; /* our insertion sort relies on size > 0 */ |
|
|
1013 | |
|
|
1014 | if (size > EIO_QSORT_SKIP) /* skip quicksort for small directories */ |
|
|
1015 | { |
|
|
1016 | /* first, use quicksort */ |
|
|
1017 | /* should be good for 2**31 entries */ |
|
|
1018 | int i; |
|
|
1019 | struct rng { eio_dirent *l, *r; } rng [32]; |
|
|
1020 | |
|
|
1021 | i = 0; |
|
|
1022 | rng[0].l = dents; |
|
|
1023 | rng[0].r = dents + size; |
|
|
1024 | |
|
|
1025 | while (expect_true (i >= 0)) |
|
|
1026 | { |
|
|
1027 | eio_dirent *L = rng [i].l; |
|
|
1028 | eio_dirent *R = rng [i].r - 1; |
|
|
1029 | |
|
|
1030 | if (expect_false (L + EIO_QSORT_CUTOFF < R)) |
|
|
1031 | { |
|
|
1032 | eio_dirent *mid = &dents [((L - dents) + (R - dents)) >> 1]; |
|
|
1033 | eio_dirent piv = *mid; *mid = *L; *L = piv; |
|
|
1034 | |
|
|
1035 | while (L < R) |
|
|
1036 | { |
|
|
1037 | while (EIO_DENT_CMP (*R, >=, piv) && L < R) |
|
|
1038 | --R; |
|
|
1039 | |
|
|
1040 | if (L < R) |
|
|
1041 | *L++ = *R; |
|
|
1042 | |
|
|
1043 | while (EIO_DENT_CMP (*L, <=, piv) && L < R) |
|
|
1044 | ++L; |
|
|
1045 | |
|
|
1046 | if (L < R) |
|
|
1047 | *R-- = *L; |
|
|
1048 | } |
|
|
1049 | |
|
|
1050 | *L = piv; |
|
|
1051 | |
|
|
1052 | ++i; |
|
|
1053 | rng [i].l = L + 1; |
|
|
1054 | rng [i].r = rng [i - 1].r; |
|
|
1055 | rng [i - 1].r = L; |
|
|
1056 | |
|
|
1057 | if (rng [i].r - rng [i].l > rng [i - 1].r - rng [i - 1].l) |
|
|
1058 | { |
|
|
1059 | struct rng t; |
|
|
1060 | |
|
|
1061 | t = rng [i]; rng [i] = rng [i - 1]; rng [i - 1] = t; |
|
|
1062 | } |
|
|
1063 | } |
|
|
1064 | else |
|
|
1065 | --i; |
|
|
1066 | } |
|
|
1067 | } |
|
|
1068 | |
|
|
1069 | /* use an insertion sort after qsort, or for small arrays */ |
|
|
1070 | /* first move the smallest element to the front, to act as a sentinel */ |
|
|
1071 | { |
|
|
1072 | int i; |
|
|
1073 | eio_dirent *min = dents; |
|
|
1074 | |
|
|
1075 | for (i = size > EIO_QSORT_SKIP ? EIO_QSORT_CUTOFF + 1 : size; --i; ) |
|
|
1076 | if (EIO_DENT_CMP (dents [i], <, *min)) |
|
|
1077 | min = &dents [i]; |
|
|
1078 | |
|
|
1079 | /* swap elements 0 and j (minimum) */ |
|
|
1080 | { |
|
|
1081 | eio_dirent tmp = *dents; *dents = *min; *min = tmp; |
|
|
1082 | } |
|
|
1083 | } |
|
|
1084 | |
|
|
1085 | { |
|
|
1086 | /* then do standard insertion sort */ |
|
|
1087 | eio_dirent *i, *j; |
|
|
1088 | |
|
|
1089 | for (i = dents + 1; i < dents + size; ++i) |
|
|
1090 | { |
|
|
1091 | eio_dirent value = *i; |
|
|
1092 | |
|
|
1093 | for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) |
|
|
1094 | j [1] = j [0]; |
|
|
1095 | |
|
|
1096 | j [1] = value; |
|
|
1097 | } |
|
|
1098 | } |
1002 | } |
1099 | } |
1003 | |
1100 | |
1004 | /* read a full directory */ |
1101 | /* read a full directory */ |
1005 | static void |
1102 | static void |
1006 | eio__scandir (eio_req *req, etp_worker *self) |
1103 | eio__scandir (eio_req *req, etp_worker *self) |
1007 | { |
1104 | { |
1008 | DIR *dirp; |
1105 | DIR *dirp; |
1009 | EIO_STRUCT_DIRENT *entp; |
1106 | EIO_STRUCT_DIRENT *entp; |
1010 | unsigned char *name, *names; |
1107 | char *name, *names; |
1011 | int namesalloc = 4096; |
1108 | int namesalloc = 4096; |
1012 | int namesoffs = 0; |
1109 | int namesoffs = 0; |
1013 | int flags = req->int1; |
1110 | int flags = req->int1; |
1014 | eio_dirent *dents = 0; |
1111 | eio_dirent *dents = 0; |
1015 | int dentalloc = 128; |
1112 | int dentalloc = 128; |
… | |
… | |
1051 | (--ent)->name = names + (size_t)ent->name; |
1148 | (--ent)->name = names + (size_t)ent->name; |
1052 | } |
1149 | } |
1053 | |
1150 | |
1054 | if (flags & EIO_READDIR_STAT_ORDER |
1151 | if (flags & EIO_READDIR_STAT_ORDER |
1055 | || !(~flags & (EIO_READDIR_DIRS_FIRST | EIO_READDIR_FOUND_UNKNOWN))) |
1152 | || !(~flags & (EIO_READDIR_DIRS_FIRST | EIO_READDIR_FOUND_UNKNOWN))) |
1056 | { |
1153 | eio_dent_sort (dents, dentoffs); /* score depends of DIRS_FIRST */ |
1057 | /* pray your qsort doesn't use quicksort */ |
|
|
1058 | qsort (dents, dentoffs, sizeof (*dents), eio_dent_cmp); /* score depends of DIRS_FIRST */ |
|
|
1059 | } |
|
|
1060 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1154 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1061 | { |
1155 | { |
1062 | /* in this case, all is known, and we just put dirs first and sort them */ |
1156 | /* in this case, all is known, and we just put dirs first and sort them */ |
1063 | eio_dirent *ent = dents + dentoffs; |
1157 | eio_dirent *ent = dents + dentoffs; |
1064 | eio_dirent *dir = dents; |
1158 | eio_dirent *dir = dents; |
1065 | |
1159 | |
|
|
1160 | /* now move dirs to the front, and non-dirs to the back */ |
|
|
1161 | /* by walking from both sides and swapping if necessary */ |
1066 | while (ent > dir) |
1162 | while (ent > dir) |
1067 | { |
1163 | { |
1068 | if (dir->type == DT_DIR) |
1164 | if (dir->type == DT_DIR) |
|
|
1165 | { |
|
|
1166 | dir->score = 0; |
1069 | ++dir; |
1167 | ++dir; |
|
|
1168 | } |
1070 | else |
1169 | else |
1071 | { |
1170 | { |
1072 | --ent; |
1171 | --ent; |
1073 | |
1172 | |
1074 | if (ent->type == DT_DIR) |
1173 | if (ent->type == DT_DIR) |
1075 | { |
1174 | { |
1076 | eio_dirent tmp = *dir; |
1175 | eio_dirent tmp = *dir; |
1077 | *dir = *ent; |
1176 | *dir = *ent; |
1078 | *ent = tmp; |
1177 | *ent = tmp; |
1079 | |
1178 | |
|
|
1179 | dir->score = 0; |
1080 | ++dir; |
1180 | ++dir; |
1081 | } |
1181 | } |
1082 | } |
1182 | } |
1083 | } |
1183 | } |
1084 | |
1184 | |
1085 | /* now sort the dirs only */ |
1185 | /* now sort the dirs only */ |
1086 | qsort (dents, dir - dents, sizeof (*dents), eio_dent_cmp); |
1186 | eio_dent_sort (dents, dir - dents); |
1087 | } |
1187 | } |
1088 | |
1188 | |
1089 | /* only provide the names array unless DENTS is specified */ |
1189 | /* only provide the names array unless DENTS is specified */ |
1090 | if (!(flags & EIO_READDIR_DENTS)) |
1190 | if (!(flags & EIO_READDIR_DENTS)) |
1091 | { |
1191 | { |
… | |
… | |
1137 | |
1237 | |
1138 | ent = dents + dentoffs; |
1238 | ent = dents + dentoffs; |
1139 | |
1239 | |
1140 | ent->name = (char *)(size_t)namesoffs; /* rather dirtily we store the offset in the pointer */ |
1240 | ent->name = (char *)(size_t)namesoffs; /* rather dirtily we store the offset in the pointer */ |
1141 | ent->namelen = len - 1; |
1241 | ent->namelen = len - 1; |
1142 | ent->inode = D_INO (entp); |
1242 | ent->inode = D_INO (entp) ? D_INO (entp) : dentoffs; |
1143 | |
1243 | |
1144 | switch (D_TYPE (entp)) |
1244 | switch (D_TYPE (entp)) |
1145 | { |
1245 | { |
1146 | default: |
1246 | default: |
1147 | ent->type = EIO_DT_UNKNOWN; |
1247 | ent->type = EIO_DT_UNKNOWN; |
… | |
… | |
1197 | if (flags & EIO_READDIR_DIRS_FIRST) |
1297 | if (flags & EIO_READDIR_DIRS_FIRST) |
1198 | { |
1298 | { |
1199 | if (ent->type == EIO_DT_UNKNOWN) |
1299 | if (ent->type == EIO_DT_UNKNOWN) |
1200 | { |
1300 | { |
1201 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
1301 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
1202 | ent->score = 98; |
1302 | ent->score = 7; |
1203 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
1303 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
1204 | ent->score = len <= 2 ? len + 60 : len <= 4 ? 50 : len <= 7 ? 40 : 10; /* shorter == more likely dir, but avoid too many classes */ |
1304 | ent->score = len <= 2 ? len + 4 : len <= 4 ? 3 : len <= 7 ? 2 : 1; /* shorter == more likely dir, but avoid too many classes */ |
1205 | } |
1305 | } |
1206 | else if (ent->type == EIO_DT_DIR) |
1306 | else if (ent->type == EIO_DT_DIR) |
1207 | ent->score = 100; |
1307 | ent->score = 8; |
1208 | } |
1308 | } |
1209 | } |
1309 | } |
1210 | |
1310 | |
1211 | namesoffs += len; |
1311 | namesoffs += len; |
1212 | ++dentoffs; |
1312 | ++dentoffs; |
1213 | } |
1313 | } |
|
|
1314 | |
|
|
1315 | if (EIO_CANCELLED (req)) |
|
|
1316 | { |
|
|
1317 | errno = ECANCELED; |
|
|
1318 | break; |
|
|
1319 | } |
1214 | } |
1320 | } |
1215 | else |
|
|
1216 | req->result = -1; |
|
|
1217 | } |
1321 | } |
1218 | |
1322 | |
1219 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1323 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1220 | # undef msync |
1324 | # undef msync |
1221 | # define msync(a,b,c) ((errno = ENOSYS), -1) |
1325 | # define msync(a,b,c) ((errno = ENOSYS), -1) |
… | |
… | |
1742 | /* misc garbage */ |
1846 | /* misc garbage */ |
1743 | |
1847 | |
1744 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
1848 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
1745 | { |
1849 | { |
1746 | etp_worker wrk; |
1850 | etp_worker wrk; |
|
|
1851 | ssize_t ret; |
1747 | |
1852 | |
1748 | wrk.dbuf = 0; |
1853 | wrk.dbuf = 0; |
1749 | |
1854 | |
1750 | eio__sendfile (ofd, ifd, offset, count, &wrk); |
1855 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
1751 | |
1856 | |
1752 | if (wrk.dbuf) |
1857 | if (wrk.dbuf) |
1753 | free (wrk.dbuf); |
1858 | free (wrk.dbuf); |
1754 | } |
|
|
1755 | |
1859 | |
|
|
1860 | return ret; |
|
|
1861 | } |
|
|
1862 | |