1 |
mszeredi |
4 |
#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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#include <fuse.h> |
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#undef DEBUGf |
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#if 0 |
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#define DEBUGf(f, a...) fprintf(stderr, "%s:%d (%i): " f,__BASE_FILE__,__LINE__,PL_stack_sp-PL_stack_base ,##a ) |
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#else |
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#define DEBUGf(a...) |
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#endif |
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SV *_PLfuse_callbacks[18]; |
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int _PLfuse_getattr(const char *file, struct stat *result) { |
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dSP; |
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int rv, statcount; |
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ENTER; |
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SAVETMPS; |
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PUSHMARK(SP); |
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XPUSHs(sv_2mortal(newSVpv(file,strlen(file)))); |
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PUTBACK; |
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rv = call_sv(_PLfuse_callbacks[0],G_ARRAY); |
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SPAGAIN; |
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if(rv != 13) { |
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if(rv > 1) { |
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fprintf(stderr,"inappropriate number of returned values from getattr\n"); |
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rv = -ENOSYS; |
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} else if(rv) |
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rv = POPi; |
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else |
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rv = -ENOENT; |
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} else { |
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result->st_blksize = POPi; |
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result->st_ctime = POPi; |
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result->st_mtime = POPi; |
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result->st_atime = POPi; |
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/* What the HELL? Perl says the blockcount is the last argument. |
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* Everything else says the blockcount is the last argument. So why |
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* was it folded into the middle of the list? */ |
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result->st_blocks = POPi; |
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result->st_size = POPi; |
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result->st_rdev = POPi; |
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result->st_gid = POPi; |
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result->st_uid = POPi; |
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result->st_nlink = POPi; |
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result->st_mode = POPi; |
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/*result->st_ino =*/ POPi; |
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result->st_dev = POPi; |
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rv = 0; |
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} |
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FREETMPS; |
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LEAVE; |
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PUTBACK; |
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return rv; |
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} |
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int _PLfuse_readlink(const char *file,char *buf,size_t buflen) { |
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int rv; |
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char *rvstr; |
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dSP; |
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I32 ax; |
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if(buflen < 1) |
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return EINVAL; |
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ENTER; |
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SAVETMPS; |
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PUSHMARK(SP); |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
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PUTBACK; |
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rv = call_sv(_PLfuse_callbacks[1],G_SCALAR); |
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SPAGAIN; |
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if(!rv) |
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rv = -ENOENT; |
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else { |
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SV *mysv = POPs; |
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if(SvTYPE(mysv) == SVt_IV || SvTYPE(mysv) == SVt_NV) |
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rv = SvIV(mysv); |
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else { |
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strncpy(buf,SvPV_nolen(mysv),buflen); |
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rv = 0; |
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} |
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} |
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FREETMPS; |
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LEAVE; |
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buf[buflen-1] = 0; |
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PUTBACK; |
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return rv; |
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} |
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int _PLfuse_getdir(const char *file, fuse_dirh_t dirh, fuse_dirfil_t dirfil) { |
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int prv, rv; |
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dSP; |
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ENTER; |
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SAVETMPS; |
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PUSHMARK(SP); |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
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PUTBACK; |
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prv = call_sv(_PLfuse_callbacks[2],G_ARRAY); |
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SPAGAIN; |
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if(prv) { |
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rv = POPi; |
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while(--prv) |
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dirfil(dirh,POPp,0); |
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} else { |
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fprintf(stderr,"getdir() handler returned nothing!\n"); |
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rv = -ENOSYS; |
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} |
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FREETMPS; |
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LEAVE; |
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PUTBACK; |
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return rv; |
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} |
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int _PLfuse_mknod (const char *file, mode_t mode, dev_t dev) { |
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int rv; |
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SV *rvsv; |
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char *rvstr; |
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dSP; |
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ENTER; |
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SAVETMPS; |
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PUSHMARK(SP); |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
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XPUSHs(sv_2mortal(newSViv(mode))); |
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XPUSHs(sv_2mortal(newSViv(dev))); |
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PUTBACK; |
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rv = call_sv(_PLfuse_callbacks[3],G_SCALAR); |
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SPAGAIN; |
129 |
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if(rv) |
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rv = POPi; |
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else |
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rv = 0; |
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FREETMPS; |
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LEAVE; |
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PUTBACK; |
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return rv; |
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} |
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int _PLfuse_mkdir (const char *file, mode_t mode) { |
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int rv; |
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SV *rvsv; |
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char *rvstr; |
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dSP; |
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DEBUGf("mkdir begin: %i\n",sp-PL_stack_base); |
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ENTER; |
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SAVETMPS; |
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PUSHMARK(SP); |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
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XPUSHs(sv_2mortal(newSViv(mode))); |
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PUTBACK; |
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rv = call_sv(_PLfuse_callbacks[4],G_SCALAR); |
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SPAGAIN; |
153 |
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if(rv) |
154 |
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rv = POPi; |
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else |
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rv = 0; |
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FREETMPS; |
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LEAVE; |
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PUTBACK; |
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DEBUGf("mkdir end: %i %i\n",sp-PL_stack_base,rv); |
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return rv; |
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} |
163 |
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164 |
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165 |
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int _PLfuse_unlink (const char *file) { |
166 |
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int rv; |
167 |
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SV *rvsv; |
168 |
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char *rvstr; |
169 |
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dSP; |
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DEBUGf("unlink begin: %i\n",sp-PL_stack_base); |
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ENTER; |
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SAVETMPS; |
173 |
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PUSHMARK(SP); |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
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PUTBACK; |
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rv = call_sv(_PLfuse_callbacks[5],G_SCALAR); |
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SPAGAIN; |
178 |
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if(rv) |
179 |
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rv = POPi; |
180 |
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else |
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rv = 0; |
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FREETMPS; |
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LEAVE; |
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PUTBACK; |
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DEBUGf("unlink end: %i\n",sp-PL_stack_base); |
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return rv; |
187 |
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} |
188 |
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189 |
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int _PLfuse_rmdir (const char *file) { |
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int rv; |
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SV *rvsv; |
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char *rvstr; |
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dSP; |
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DEBUGf("rmdir begin: %i\n",sp-PL_stack_base); |
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ENTER; |
196 |
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SAVETMPS; |
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PUSHMARK(SP); |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
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PUTBACK; |
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rv = call_sv(_PLfuse_callbacks[6],G_SCALAR); |
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SPAGAIN; |
202 |
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if(rv) |
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rv = POPi; |
204 |
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else |
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rv = 0; |
206 |
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FREETMPS; |
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LEAVE; |
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PUTBACK; |
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DEBUGf("rmdir end: %i %i\n",sp-PL_stack_base,rv); |
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return rv; |
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} |
212 |
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213 |
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int _PLfuse_symlink (const char *file, const char *new) { |
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int rv; |
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SV *rvsv; |
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char *rvstr; |
217 |
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dSP; |
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DEBUGf("symlink begin: %i\n",sp-PL_stack_base); |
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ENTER; |
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SAVETMPS; |
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PUSHMARK(SP); |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
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XPUSHs(sv_2mortal(newSVpv(new,0))); |
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PUTBACK; |
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rv = call_sv(_PLfuse_callbacks[7],G_SCALAR); |
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SPAGAIN; |
227 |
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if(rv) |
228 |
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rv = POPi; |
229 |
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else |
230 |
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rv = 0; |
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FREETMPS; |
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LEAVE; |
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PUTBACK; |
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DEBUGf("symlink end: %i\n",sp-PL_stack_base); |
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return rv; |
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} |
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int _PLfuse_rename (const char *file, const char *new) { |
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int rv; |
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SV *rvsv; |
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char *rvstr; |
242 |
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dSP; |
243 |
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DEBUGf("rename begin: %i\n",sp-PL_stack_base); |
244 |
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ENTER; |
245 |
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SAVETMPS; |
246 |
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PUSHMARK(SP); |
247 |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
248 |
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XPUSHs(sv_2mortal(newSVpv(new,0))); |
249 |
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PUTBACK; |
250 |
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rv = call_sv(_PLfuse_callbacks[8],G_SCALAR); |
251 |
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SPAGAIN; |
252 |
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if(rv) |
253 |
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rv = POPi; |
254 |
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else |
255 |
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rv = 0; |
256 |
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FREETMPS; |
257 |
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LEAVE; |
258 |
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PUTBACK; |
259 |
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DEBUGf("rename end: %i\n",sp-PL_stack_base); |
260 |
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return rv; |
261 |
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} |
262 |
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263 |
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int _PLfuse_link (const char *file, const char *new) { |
264 |
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int rv; |
265 |
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SV *rvsv; |
266 |
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char *rvstr; |
267 |
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dSP; |
268 |
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DEBUGf("link begin: %i\n",sp-PL_stack_base); |
269 |
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ENTER; |
270 |
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SAVETMPS; |
271 |
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PUSHMARK(SP); |
272 |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
273 |
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XPUSHs(sv_2mortal(newSVpv(new,0))); |
274 |
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PUTBACK; |
275 |
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rv = call_sv(_PLfuse_callbacks[9],G_SCALAR); |
276 |
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SPAGAIN; |
277 |
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if(rv) |
278 |
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rv = POPi; |
279 |
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else |
280 |
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rv = 0; |
281 |
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FREETMPS; |
282 |
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LEAVE; |
283 |
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PUTBACK; |
284 |
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DEBUGf("link end: %i\n",sp-PL_stack_base); |
285 |
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return rv; |
286 |
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} |
287 |
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288 |
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int _PLfuse_chmod (const char *file, mode_t mode) { |
289 |
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int rv; |
290 |
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SV *rvsv; |
291 |
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char *rvstr; |
292 |
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dSP; |
293 |
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DEBUGf("chmod begin: %i\n",sp-PL_stack_base); |
294 |
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ENTER; |
295 |
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SAVETMPS; |
296 |
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PUSHMARK(SP); |
297 |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
298 |
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XPUSHs(sv_2mortal(newSViv(mode))); |
299 |
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PUTBACK; |
300 |
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rv = call_sv(_PLfuse_callbacks[10],G_SCALAR); |
301 |
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SPAGAIN; |
302 |
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if(rv) |
303 |
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rv = POPi; |
304 |
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else |
305 |
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rv = 0; |
306 |
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FREETMPS; |
307 |
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LEAVE; |
308 |
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PUTBACK; |
309 |
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DEBUGf("chmod end: %i\n",sp-PL_stack_base); |
310 |
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return rv; |
311 |
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} |
312 |
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313 |
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int _PLfuse_chown (const char *file, uid_t uid, gid_t gid) { |
314 |
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int rv; |
315 |
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SV *rvsv; |
316 |
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char *rvstr; |
317 |
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dSP; |
318 |
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DEBUGf("chown begin: %i\n",sp-PL_stack_base); |
319 |
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ENTER; |
320 |
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SAVETMPS; |
321 |
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PUSHMARK(SP); |
322 |
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
323 |
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XPUSHs(sv_2mortal(newSViv(uid))); |
324 |
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XPUSHs(sv_2mortal(newSViv(gid))); |
325 |
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PUTBACK; |
326 |
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rv = call_sv(_PLfuse_callbacks[11],G_SCALAR); |
327 |
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SPAGAIN; |
328 |
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if(rv) |
329 |
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rv = POPi; |
330 |
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else |
331 |
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rv = 0; |
332 |
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FREETMPS; |
333 |
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|
LEAVE; |
334 |
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PUTBACK; |
335 |
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DEBUGf("chown end: %i\n",sp-PL_stack_base); |
336 |
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return rv; |
337 |
|
|
} |
338 |
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|
339 |
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int _PLfuse_truncate (const char *file, off_t off) { |
340 |
|
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int rv; |
341 |
|
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SV *rvsv; |
342 |
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char *rvstr; |
343 |
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dSP; |
344 |
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DEBUGf("truncate begin: %i\n",sp-PL_stack_base); |
345 |
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ENTER; |
346 |
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SAVETMPS; |
347 |
|
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PUSHMARK(SP); |
348 |
|
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XPUSHs(sv_2mortal(newSVpv(file,0))); |
349 |
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XPUSHs(sv_2mortal(newSViv(off))); |
350 |
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PUTBACK; |
351 |
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rv = call_sv(_PLfuse_callbacks[12],G_SCALAR); |
352 |
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SPAGAIN; |
353 |
|
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if(rv) |
354 |
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rv = POPi; |
355 |
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else |
356 |
|
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rv = 0; |
357 |
|
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FREETMPS; |
358 |
|
|
LEAVE; |
359 |
|
|
PUTBACK; |
360 |
|
|
DEBUGf("truncate end: %i\n",sp-PL_stack_base); |
361 |
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return rv; |
362 |
|
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} |
363 |
|
|
|
364 |
|
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int _PLfuse_utime (const char *file, struct utimbuf *uti) { |
365 |
|
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int rv; |
366 |
|
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SV *rvsv; |
367 |
|
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char *rvstr; |
368 |
|
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dSP; |
369 |
|
|
DEBUGf("utime begin: %i\n",sp-PL_stack_base); |
370 |
|
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ENTER; |
371 |
|
|
SAVETMPS; |
372 |
|
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PUSHMARK(SP); |
373 |
|
|
XPUSHs(sv_2mortal(newSVpv(file,0))); |
374 |
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XPUSHs(sv_2mortal(newSViv(uti->actime))); |
375 |
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XPUSHs(sv_2mortal(newSViv(uti->modtime))); |
376 |
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PUTBACK; |
377 |
|
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rv = call_sv(_PLfuse_callbacks[13],G_SCALAR); |
378 |
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SPAGAIN; |
379 |
|
|
if(rv) |
380 |
|
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rv = POPi; |
381 |
|
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else |
382 |
|
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rv = 0; |
383 |
|
|
FREETMPS; |
384 |
|
|
LEAVE; |
385 |
|
|
PUTBACK; |
386 |
|
|
DEBUGf("utime end: %i\n",sp-PL_stack_base); |
387 |
|
|
return rv; |
388 |
|
|
} |
389 |
|
|
|
390 |
|
|
int _PLfuse_open (const char *file, int flags) { |
391 |
|
|
int rv; |
392 |
|
|
SV *rvsv; |
393 |
|
|
char *rvstr; |
394 |
|
|
dSP; |
395 |
|
|
DEBUGf("open begin: %i\n",sp-PL_stack_base); |
396 |
|
|
ENTER; |
397 |
|
|
SAVETMPS; |
398 |
|
|
PUSHMARK(SP); |
399 |
|
|
XPUSHs(sv_2mortal(newSVpv(file,0))); |
400 |
|
|
XPUSHs(sv_2mortal(newSViv(flags))); |
401 |
|
|
PUTBACK; |
402 |
|
|
rv = call_sv(_PLfuse_callbacks[14],G_SCALAR); |
403 |
|
|
SPAGAIN; |
404 |
|
|
if(rv) |
405 |
|
|
rv = POPi; |
406 |
|
|
else |
407 |
|
|
rv = 0; |
408 |
|
|
FREETMPS; |
409 |
|
|
LEAVE; |
410 |
|
|
PUTBACK; |
411 |
|
|
DEBUGf("open end: %i %i\n",sp-PL_stack_base,rv); |
412 |
|
|
return rv; |
413 |
|
|
} |
414 |
|
|
|
415 |
|
|
int _PLfuse_read (const char *file, char *buf, size_t buflen, off_t off) { |
416 |
|
|
int rv; |
417 |
|
|
char *rvstr; |
418 |
|
|
dSP; |
419 |
|
|
DEBUGf("read begin: %i\n",sp-PL_stack_base); |
420 |
|
|
ENTER; |
421 |
|
|
SAVETMPS; |
422 |
|
|
PUSHMARK(SP); |
423 |
|
|
XPUSHs(sv_2mortal(newSVpv(file,0))); |
424 |
|
|
XPUSHs(sv_2mortal(newSViv(buflen))); |
425 |
|
|
XPUSHs(sv_2mortal(newSViv(off))); |
426 |
|
|
PUTBACK; |
427 |
|
|
rv = call_sv(_PLfuse_callbacks[15],G_SCALAR); |
428 |
|
|
SPAGAIN; |
429 |
|
|
if(!rv) |
430 |
|
|
rv = -ENOENT; |
431 |
|
|
else { |
432 |
|
|
SV *mysv = POPs; |
433 |
|
|
if(SvTYPE(mysv) == SVt_NV || SvTYPE(mysv) == SVt_IV) |
434 |
|
|
rv = SvIV(mysv); |
435 |
|
|
else { |
436 |
|
|
if(SvPOK(mysv)) { |
437 |
|
|
rv = SvCUR(mysv); |
438 |
|
|
} else { |
439 |
|
|
rv = 0; |
440 |
|
|
} |
441 |
|
|
if(rv > buflen) |
442 |
|
|
croak("read() handler returned more than buflen! (%i > %i)",rv,buflen); |
443 |
|
|
if(rv) |
444 |
|
|
memcpy(buf,SvPV_nolen(mysv),rv); |
445 |
|
|
} |
446 |
|
|
} |
447 |
|
|
FREETMPS; |
448 |
|
|
LEAVE; |
449 |
|
|
PUTBACK; |
450 |
|
|
DEBUGf("read end: %i %i\n",sp-PL_stack_base,rv); |
451 |
|
|
return rv; |
452 |
|
|
} |
453 |
|
|
|
454 |
|
|
int _PLfuse_write (const char *file, const char *buf, size_t buflen, off_t off) { |
455 |
|
|
int rv; |
456 |
|
|
char *rvstr; |
457 |
|
|
dSP; |
458 |
|
|
DEBUGf("write begin: %i\n",sp-PL_stack_base); |
459 |
|
|
ENTER; |
460 |
|
|
SAVETMPS; |
461 |
|
|
PUSHMARK(SP); |
462 |
|
|
XPUSHs(sv_2mortal(newSVpv(file,0))); |
463 |
|
|
XPUSHs(sv_2mortal(newSVpvn(buf,buflen))); |
464 |
|
|
XPUSHs(sv_2mortal(newSViv(off))); |
465 |
|
|
PUTBACK; |
466 |
|
|
rv = call_sv(_PLfuse_callbacks[16],G_SCALAR); |
467 |
|
|
SPAGAIN; |
468 |
|
|
if(rv) |
469 |
|
|
rv = POPi; |
470 |
|
|
else |
471 |
|
|
rv = 0; |
472 |
|
|
FREETMPS; |
473 |
|
|
LEAVE; |
474 |
|
|
PUTBACK; |
475 |
|
|
DEBUGf("write end: %i\n",sp-PL_stack_base); |
476 |
|
|
return rv; |
477 |
|
|
} |
478 |
|
|
|
479 |
|
|
int _PLfuse_statfs (const char *file, struct statfs *st) { |
480 |
|
|
int rv; |
481 |
|
|
char *rvstr; |
482 |
|
|
dSP; |
483 |
|
|
DEBUGf("statfs begin: %i\n",sp-PL_stack_base); |
484 |
|
|
ENTER; |
485 |
|
|
SAVETMPS; |
486 |
|
|
PUSHMARK(SP); |
487 |
|
|
PUTBACK; |
488 |
|
|
rv = call_sv(_PLfuse_callbacks[17],G_ARRAY); |
489 |
|
|
SPAGAIN; |
490 |
|
|
if(rv > 5) { |
491 |
|
|
st->f_bsize = POPi; |
492 |
|
|
st->f_bfree = POPi; |
493 |
|
|
st->f_blocks = POPi; |
494 |
|
|
st->f_ffree = POPi; |
495 |
|
|
st->f_files = POPi; |
496 |
|
|
st->f_namelen = POPi; |
497 |
|
|
if(rv > 6) |
498 |
|
|
rv = POPi; |
499 |
|
|
else |
500 |
|
|
rv = 0; |
501 |
|
|
} else |
502 |
|
|
if(rv > 1) |
503 |
|
|
croak("inappropriate number of returned values from statfs"); |
504 |
|
|
else |
505 |
|
|
if(rv) |
506 |
|
|
rv = POPi; |
507 |
|
|
else |
508 |
|
|
rv = -ENOSYS; |
509 |
|
|
FREETMPS; |
510 |
|
|
LEAVE; |
511 |
|
|
PUTBACK; |
512 |
|
|
DEBUGf("statfs end: %i\n",sp-PL_stack_base); |
513 |
|
|
return rv; |
514 |
|
|
} |
515 |
|
|
|
516 |
|
|
struct fuse_operations _available_ops = { |
517 |
|
|
getattr: _PLfuse_getattr, |
518 |
|
|
_PLfuse_readlink, |
519 |
|
|
_PLfuse_getdir, |
520 |
|
|
_PLfuse_mknod, |
521 |
|
|
_PLfuse_mkdir, |
522 |
|
|
_PLfuse_unlink, |
523 |
|
|
_PLfuse_rmdir, |
524 |
|
|
_PLfuse_symlink, |
525 |
|
|
_PLfuse_rename, |
526 |
|
|
_PLfuse_link, |
527 |
|
|
_PLfuse_chmod, |
528 |
|
|
_PLfuse_chown, |
529 |
|
|
_PLfuse_truncate, |
530 |
|
|
_PLfuse_utime, |
531 |
|
|
_PLfuse_open, |
532 |
|
|
_PLfuse_read, |
533 |
|
|
_PLfuse_write, |
534 |
|
|
_PLfuse_statfs |
535 |
|
|
}; |
536 |
|
|
|
537 |
|
|
MODULE = Fuse PACKAGE = Fuse |
538 |
|
|
PROTOTYPES: DISABLE |
539 |
|
|
|
540 |
|
|
void |
541 |
|
|
perl_fuse_main(...) |
542 |
|
|
PREINIT: |
543 |
|
|
struct fuse_operations fops = {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL}; |
544 |
|
|
int i, fd, varnum = 0, debug, have_mnt; |
545 |
|
|
char *mountpoint; |
546 |
|
|
STRLEN n_a; |
547 |
|
|
STRLEN l; |
548 |
|
|
INIT: |
549 |
|
|
if(items != 20) { |
550 |
|
|
fprintf(stderr,"Perl<->C inconsistency or internal error\n"); |
551 |
|
|
XSRETURN_UNDEF; |
552 |
|
|
} |
553 |
|
|
CODE: |
554 |
|
|
debug = SvIV(ST(0)); |
555 |
|
|
mountpoint = SvPV_nolen(ST(1)); |
556 |
|
|
/* FIXME: reevaluate multithreading support when perl6 arrives */ |
557 |
|
|
for(i=0;i<18;i++) { |
558 |
|
|
SV *var = ST(i+2); |
559 |
|
|
if((var != &PL_sv_undef) && SvROK(var)) { |
560 |
|
|
if(SvTYPE(SvRV(var)) == SVt_PVCV) { |
561 |
|
|
void **tmp1 = (void**)&_available_ops, **tmp2 = (void**)&fops; |
562 |
|
|
tmp2[i] = tmp1[i]; |
563 |
|
|
_PLfuse_callbacks[i] = var; |
564 |
|
|
} else |
565 |
|
|
croak("arg is not a code reference!"); |
566 |
|
|
} |
567 |
|
|
} |
568 |
|
|
/* FIXME: need to pass fusermount arguments */ |
569 |
|
|
fd = fuse_mount(mountpoint,NULL); |
570 |
|
|
if(fd < 0) |
571 |
|
|
croak("could not mount fuse filesystem!"); |
572 |
|
|
fuse_loop(fuse_new(fd,debug ? "debug" : NULL,&fops)); |