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VM: 64-bit mmap()

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Some (backwards-compatible) changes in mmap() call message fields
that allow for a 64-bit offset. minix_mmap() takes an off_t and
minix_mmap64() takes a u64_t. Some mmap() work in VM goes into a
separate function, using the new fields, so that that can be re-used
when files are to be mapped (future commit).

Change-Id: Ifb77a90b593dd3c33cf81b396068e4da1ec5fb1c
This commit is contained in:
Ben Gras
2013-04-24 10:18:15 +00:00
parent 75c5fe4c26
commit 9e88c40e40
4 changed files with 71 additions and 40 deletions
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include/minix/com.h
+2 -1
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@@ -942,8 +942,9 @@
# define VMM_PROT m5_s1
# define VMM_FLAGS m5_s2
# define VMM_FD m5_i1
# define VMM_OFFSET m5_i2
# define VMM_OFFSET_LO m5_i2
# define VMM_FORWHOM m5_l3
# define VMM_OFFSET_HI m5_l3
# define VMM_RETADDR m5_l1 /* result */
#define VM_UMAP (VM_RQ_BASE+11)
# define VMU_SEG m1_i1