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Lines 37-42
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| 37 |
#include <stdint.h> |
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#include <stdint.h> |
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#include <sys/mman.h> |
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#include <sys/mman.h> |
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#include <sys/param.h> |
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#include <sys/param.h> |
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#include <sys/shm.h> |
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#include <sys/stat.h> |
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#include <sys/stat.h> |
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#include "../../crypt/md5.h" |
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#include "../../crypt/md5.h" |
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Lines 85-95
prepare_address_space (int fd, size_t total, size_t *reserved, int *xflags)
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{ |
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{ |
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void *p = mmap64 (NULL, RESERVE_MMAP_SIZE, PROT_NONE, MAP_SHARED, fd, 0); |
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void *p = mmap64 (NULL, RESERVE_MMAP_SIZE, PROT_NONE, MAP_SHARED, fd, 0); |
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if (p != MAP_FAILED) |
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if (p != MAP_FAILED) |
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{ |
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{ |
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*reserved = RESERVE_MMAP_SIZE; |
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/* Some arches require fixed mappings to be aligned higher than |
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*xflags = MAP_FIXED; |
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pagesize, and SHMLBA represents that size. */ |
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return p; |
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size_t align_adjust = (uintptr_t)p & SHMLBA; |
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} |
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*reserved = RESERVE_MMAP_SIZE - align_adjust; |
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*xflags = MAP_FIXED; |
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return p + align_adjust; |
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} |
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} |
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} |
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*reserved = total; |
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*reserved = total; |
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Lines 271-278
file_data_available_p (struct locarhandle *ah, uint32_t offset, uint32_t size)
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if (st.st_size > ah->reserved) |
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if (st.st_size > ah->reserved) |
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return false; |
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return false; |
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const size_t pagesz = getpagesize (); |
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size_t start = ah->mmaped & ~(SHMLBA - 1); |
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size_t start = ah->mmaped & ~(pagesz - 1); |
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void *p = mmap64 (ah->addr + start, st.st_size - start, |
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void *p = mmap64 (ah->addr + start, st.st_size - start, |
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PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, |
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PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, |
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ah->fd, start); |
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ah->fd, start); |
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