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author | Benji Dial <benji@benjidial.net> | 2024-01-15 15:44:20 -0500 |
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committer | Benji Dial <benji@benjidial.net> | 2024-01-15 15:44:20 -0500 |
commit | c9a1266d219a83882735a3a8304f3824e0219cdb (patch) | |
tree | fea71a0b5b0de8f3a8962dc6ed417273f231e2a9 /include/mercury/kernel/vfile.hpp | |
parent | 7c6a18d77a81f232ad2e1d3a311bb21ea8f1f5b4 (diff) | |
download | hilbert-os-c9a1266d219a83882735a3a8304f3824e0219cdb.tar.gz |
redo application paging and system calls, rename mercury to hilbert
Diffstat (limited to 'include/mercury/kernel/vfile.hpp')
-rw-r--r-- | include/mercury/kernel/vfile.hpp | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/include/mercury/kernel/vfile.hpp b/include/mercury/kernel/vfile.hpp deleted file mode 100644 index ce72bb1..0000000 --- a/include/mercury/kernel/vfile.hpp +++ /dev/null @@ -1,67 +0,0 @@ -#ifndef MERCURY_KERNEL_VFILE_HPP -#define MERCURY_KERNEL_VFILE_HPP - -#include <mercury/kernel/storage.hpp> -#include <mercury/kernel/utility.hpp> - -//TODO: mounts points. -//maybe a two-way map between mount points and targets? one mount point per -//target and vice versa. only directories may be mount points, and only file -//system roots (which must be directories) may be targets. - -namespace mercury::kernel::vfile { - - //a canon path contains no . or empty directory names, and - //contains no .. except for at the start of a relative path. - struct canon_path { - - bool absolute; - unsigned parent_count; - utility::vector<utility::string> segments; - - canon_path() : absolute(false), parent_count(0), segments(8) {} - - void parent(); - void rel(const canon_path &r); - - utility::string to_string(bool trailing_slash) const; - - }; - - void canonize_path(const utility::string &name, canon_path &out); - - struct vfile { - - //on followed symlinks, path is the source of the symlink and the - //rest of these are the target. in any case, path should be absolute. - canon_path path; - storage::block_device *bd; - storage::dir_entry dir_entry; - - //TODO: instead of passing root, use saved mount points. - storage::fs_result follow_symlinks( - const vfile &root, std::optional<vfile> &out) const; - - //dir_entry.type is assumed to be directory. - storage::fs_result get_child( - std::optional<vfile> &out, const utility::string &name) const; - //dir_entry.type is assumed to be directory. out must be empty on entry. - storage::fs_result get_children(utility::vector<vfile> &out) const; - - //assumes file is a regular file and [start, start + length) - //is in bounds of file. start and length are in bytes. - storage::fs_result read_file( - uint64_t start, uint64_t length, void *into) const; - - }; - - //path must be absolute. follows symlinks on all but the last node. - //relative_to should be a directory to do the lookup inside; e.g., - //if relative_to is /a/b and path is c, then out becomes /a/b/c. - //TODO: instead of passing root, use saved mount points. - storage::fs_result lookup_path( - const vfile &root, const canon_path &path, std::optional<vfile> &out); - -} - -#endif |