Commit 1d3c1e6c authored by Marc Vef's avatar Marc Vef
Browse files

adafs_truncate() implemented

parent b81121bd

fs/src/classes/metadata.cpp

+10 −2
Original line number Diff line number Diff line
@@ -121,5 +121,13 @@ void Metadata::init_ACM_time() { 
    ctime_ = time;

}





void Metadata::update_ACM_time(bool a, bool c, bool m) {

    std::time_t time;

    std::time(&time);

    if (a)

        atime_ = time;

    if (c)

        ctime_ = time;

    if (m)

        mtime_ = time;

}

fs/src/classes/metadata.h

+2 −0
Original line number Diff line number Diff line
@@ -27,6 +27,8 @@ public: 


    void init_ACM_time();



    void update_ACM_time(bool a, bool c, bool m);



    //Getter and Setter

    time_t atime() const;

fs/src/configure.h

+3 −0
Original line number Diff line number Diff line
@@ -9,4 +9,7 @@ 
#define LOG_INFO

//#define LOG_DEBUG



// Uncomment if ACM time should be considered

#define ACMtime



#endif //FS_CONFIGURE_H

fs/src/fuse_ops/io.cpp

+24 −2
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ 


#include "../main.h"

#include "../fuse_ops.h"

#include "../adafs_ops/metadata_ops.h"



/** Read data from an open file

 *
@@ -46,8 +47,29 @@ int adafs_write(const char* p, const char* buf, size_t size, off_t offset, struc 
 * expected to reset the setuid and setgid bits.

 */

int adafs_truncate(const char* p, off_t offset, struct fuse_file_info* fi) {

    ADAFS_DATA->logger->info("##### FUSE FUNC ###### adafs_truncate() enter: name '{}' offset {}", p, offset);

    ADAFS_DATA->logger->info("##### FUSE FUNC ###### adafs_truncate() enter: name '{}' offset (size) {}", p, offset);



    auto path = bfs::path(p);

    auto path_hash = ADAFS_DATA->hashf(path.string());

    auto md = make_shared<Metadata>();



    get_metadata(*md, path);

    // XXX might need to check access here. But shouldn't access be checked through adafs_open() before?



    // Check the file size limits

    if (offset > numeric_limits<uint32_t>::max()) return -EFBIG;



    // Set new size of the file

    md->size((uint32_t) offset);



    // write it to disk (XXX make it dirty later and write to disk in fsync (I believe))

    write_metadata_field(md->size(), path_hash, md_field_map.at(Md_fields::size));



#ifdef ACMtime

    md->update_ACM_time(true, false, true);

    write_metadata_field(md->atime(), path_hash, md_field_map.at(Md_fields::atime));

    write_metadata_field(md->mtime(), path_hash, md_field_map.at(Md_fields::mtime));

#endif



    // TODO implement

    return 0;

}
 
 No newline at end of file