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1.1 ! root 1: #include <sys/types.h> ! 2: #include <sys/stat.h> ! 3: #include <sys/dir.h> ! 4: #include "fio.h" ! 5: #define DIRSIZE 14 ! 6: g_char(a,alen,b) char *a,*b; ftnlen alen; ! 7: { char *x=a+alen-1,*y=b+alen-1; ! 8: *(y+1)=0; ! 9: for(;x>=a && *x==' ';x--) *y--=0; ! 10: for(;x>=a;*y--= *x--); ! 11: } ! 12: b_char(a,b,blen) char *a,*b; ftnlen blen; ! 13: { int i; ! 14: for(i=0;i<blen && *a!=0;i++) *b++= *a++; ! 15: for(;i<blen;i++) *b++=' '; ! 16: } ! 17: inode(a) char *a; ! 18: { struct stat x; ! 19: if(stat(a,&x)<0) return(-1); ! 20: return(x.st_ino); ! 21: } ! 22: #define DONE {*bufpos++=0; close(file); return;} ! 23: #define INTBOUND sizeof(int)-1 ! 24: #define register ! 25: mvgbt(n,len,a,b) char *a,*b; ! 26: { register int num=n*len; ! 27: if( ((int)a&INTBOUND)==0 && ((int)b&INTBOUND)==0 && (num&INTBOUND)==0 ) ! 28: { register int *x=(int *)a,*y=(int *)b; ! 29: num /= sizeof(int); ! 30: if(x>y) for(;num>0;num--) *y++= *x++; ! 31: else for(num--;num>=0;num--) *(y+num)= *(x+num); ! 32: } ! 33: else ! 34: { register char *x=a,*y=b; ! 35: if(x>y) for(;num>0;num--) *y++= *x++; ! 36: else for(num--;num>=0;num--) *(y+num)= *(x+num); ! 37: } ! 38: } ! 39: char *curdir() ! 40: { char name[256],*bufpos = name; ! 41: struct stat x; ! 42: struct direct y; ! 43: int file,i; ! 44: *bufpos++ = 0; ! 45: loop: stat(".",&x); ! 46: if((file=open("..",0))<0) goto done; ! 47: do ! 48: { if(read(file,&y,sizeof(y))<sizeof(y)) goto done; ! 49: } while(y.d_ino!=x.st_ino); ! 50: close(file); ! 51: if(y.d_ino!=2) ! 52: { dcat(name,y.d_name); ! 53: chdir(".."); ! 54: goto loop; ! 55: } ! 56: if(stat(y.d_name,&x)<0 || chdir("/")<0 ! 57: || (file=open("/",0))<0) goto done; ! 58: i=x.st_dev; ! 59: do ! 60: { if(read(file,&y,sizeof(y))<sizeof(y)) goto done; ! 61: if(y.d_ino==0) continue; ! 62: if(stat(y.d_name,&x)<0) goto done; ! 63: } while(x.st_dev!=i || (x.st_mode&S_IFMT)!=S_IFDIR); ! 64: if(strcmp(".",y.d_name) || strcmp("..",y.d_name)) ! 65: dcat(name,y.d_name); ! 66: dcat(name,"/"); ! 67: done: ! 68: bufpos=calloc(strlen(name)+1,1); ! 69: strcpy(bufpos,name); ! 70: chdir(name); ! 71: close(file); ! 72: return(bufpos); ! 73: } ! 74: dcat(a,b) char *a,*b; ! 75: { ! 76: int i,j; ! 77: i=strlen(b); ! 78: j=strlen(a); ! 79: mvgbt(1,j+1,a,a+i+1); ! 80: mvgbt(1,i,b,a); ! 81: a[i]='/'; ! 82: } ! 83: fullpath(a,b,errflag) char *a,*b; ! 84: { ! 85: char *a1,*a2,*npart,*dpart,*p; ! 86: a1=curdir(); ! 87: npart=NULL; ! 88: for(p=a;*p!=0;p++) ! 89: if(*p=='/') npart=p; ! 90: if(npart==NULL) ! 91: { dpart=NULL; ! 92: npart=a; ! 93: } ! 94: else ! 95: { dpart=a; ! 96: *npart++ = 0; ! 97: } ! 98: if(dpart!=NULL) ! 99: { chdir(dpart); ! 100: a2=curdir(); ! 101: strcpy(b,a2); ! 102: } ! 103: else ! 104: { a2=NULL; ! 105: strcpy(b, a1); ! 106: } ! 107: strcat(b,npart); ! 108: chdir(a1); ! 109: if(a1!=NULL) ! 110: { free(a1); ! 111: a1=NULL; ! 112: } ! 113: if(a2!=NULL) ! 114: { free(a2); ! 115: } ! 116: return(0); ! 117: }
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