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This commit is contained in:
Oliver Lehmann 2009-08-27 09:16:35 +00:00
parent 36058cae5f
commit 0f7e29a54d
2 changed files with 19 additions and 31 deletions
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1
WEGA/src/lib/libc/gen/TODO
View File

@ -3,4 +3,3 @@ execvp.o /z/src/libc/orig_obj/execvp.o differ: char 6, line 1
getgrent.o /z/src/libc/orig_obj/getgrent.o differ: char 132, line 1
malloc.o /z/src/libc/orig_obj/malloc.o differ: char 5, line 1
nlist.o /z/src/libc/orig_obj/nlist.o differ: char 5, line 1
ttyname.o /z/src/libc/orig_obj/ttyname.o differ: char 5, line 1

33
WEGA/src/lib/libc/gen/ttyname.c
View File

@ -3,12 +3,7 @@
/*
* ttyname(f): return "/dev/ttyXX" which the the name of the
* tty belonging to file f.
*
* This program works in two passes: the first pass tries to
* find the device by matchine device and inode numbers; if
* that doesn't work, it tries a second time, this time doing a
* stat on every file in /dev and trying to match device numbers
* only. If that fails too, NULL is returned.
* NULL if it is not a tty
*/
#define NULL 0
@ -27,36 +22,30 @@ ttyname(f)
struct stat tsb;
struct direct db;
static char rbuf[32];
register df, pass1;
register df;
if(isatty(f) == 0)
if (isatty(f)==0)
return(NULL);
if(fstat(f, &fsb) < 0)
if (fstat(f, &fsb) < 0)
return(NULL);
if((fsb.st_mode & S_IFMT) != S_IFCHR)
if ((fsb.st_mode&S_IFMT) != S_IFCHR)
return(NULL);
if((df = open(dev, 0)) < 0)
if ((df = open(dev, 0)) < 0)
return(NULL);
pass1 = 1;
do {
while(read(df, (char *)&db, sizeof(db)) == sizeof(db)) {
if(db.d_ino == 0)
while (read(df, (char *)&db, sizeof(db)) == sizeof(db)) {
if (db.d_ino == 0)
continue;
if(pass1 && db.d_ino != fsb.st_ino)
if (db.d_ino != fsb.st_ino)
continue;
strcpy(rbuf, dev);
strcat(rbuf, db.d_name);
if(stat(rbuf, &tsb) < 0)
if (stat(rbuf, &tsb) < 0)
continue;
if(tsb.st_rdev == fsb.st_rdev
&& (tsb.st_mode&S_IFMT) == S_IFCHR
&& (!pass1 || tsb.st_ino == fsb.st_ino)) {
if (tsb.st_dev==fsb.st_dev && tsb.st_ino==fsb.st_ino) {
close(df);
return(rbuf);
}
}
lseek(df, 0L, 0);
} while(pass1--);
close(df);
return(NULL);
}