diff options
Diffstat (limited to 'coreutils')
-rw-r--r-- | coreutils/ln.c | 152 |
1 files changed, 69 insertions, 83 deletions
diff --git a/coreutils/ln.c b/coreutils/ln.c index 8ef8d05de..38e9b6763 100644 --- a/coreutils/ln.c +++ b/coreutils/ln.c @@ -30,96 +30,82 @@ #include <dirent.h> #include <errno.h> -static int symlinkFlag = FALSE; -static int removeoldFlag = FALSE; -static int followLinks = TRUE; +#define LN_SYMLINK 1 +#define LN_FORCE 2 +#define LN_NODEREFERENCE 4 -extern int ln_main(int argc, char **argv) +/* + * linkDestName is where the link points to, + * linkSrcName is the name of the link to be created. + */ +static int fs_link(const char *link_DestName, const char *link_SrcName, const int flag) { - char *linkName, *dirName=NULL; - int linkIntoDirFlag; - int stopIt = FALSE; - - argc--; - argv++; - - /* Parse any options */ - while (argc > 0 && stopIt == FALSE) { - if (**argv == '-') { - while (*++(*argv)) - switch (**argv) { - case 's': - symlinkFlag = TRUE; - break; - case 'f': - removeoldFlag = TRUE; - break; - case 'n': - followLinks = FALSE; - break; - case '-': - stopIt = TRUE; - break; - default: - usage(ln_usage); - } - argc--; - argv++; - } - else - break; - } - - if (argc < 2) { - usage(ln_usage); + int status; + int srcIsDir; + char *srcName; + + if (link_DestName==NULL) + return(FALSE); + + srcName = (char *) malloc(strlen(link_SrcName)+strlen(link_DestName)+1); + + if (link_SrcName==NULL) + strcpy(srcName, link_DestName); + else + strcpy(srcName, link_SrcName); + + if (flag&LN_NODEREFERENCE) + srcIsDir = isDirectory(srcName, TRUE, NULL); + else + srcIsDir = isDirectory(srcName, FALSE, NULL); + + if ((srcIsDir==TRUE)&&((flag&LN_NODEREFERENCE)==0)) { + strcat(srcName, "/"); + strcat(srcName, link_DestName); } - - linkName = argv[argc - 1]; - - linkIntoDirFlag = isDirectory(linkName, followLinks, NULL); - if ((argc >= 3) && linkIntoDirFlag == FALSE) { - errorMsg(not_a_directory, linkName); - exit FALSE; + + if (flag&LN_FORCE) + unlink(srcName); + + if (flag&LN_SYMLINK) + status = symlink(link_DestName, srcName); + else + status = link(link_DestName, srcName); + + if (status != 0) { + perror(srcName); + return(FALSE); } + return(TRUE); +} - if (linkIntoDirFlag == TRUE) - dirName = linkName; - - while (argc-- >= 2) { - int status; - - if (linkIntoDirFlag == TRUE) { - char *baseName = get_last_path_component(*argv); - linkName = (char *)xmalloc(strlen(dirName)+strlen(baseName)+2); - strcpy(linkName, dirName); - if(dirName[strlen(dirName)-1] != '/') - strcat(linkName, "/"); - strcat(linkName,baseName); - } - - if (removeoldFlag == TRUE) { - status = (unlink(linkName) && errno != ENOENT); - if (status != 0) { - perror(linkName); - exit FALSE; - } - } - - if (symlinkFlag == TRUE) - status = symlink(*argv, linkName); - else - status = link(*argv, linkName); - if (status != 0) { - perror(linkName); - exit FALSE; +extern int ln_main(int argc, char **argv) +{ + int flag = 0; + int opt; + + /* Parse any options */ + while ((opt=getopt(argc, argv, "sfn")) != -1) { + switch(opt) { + case 's': + flag |= LN_SYMLINK; + break; + case 'f': + flag |= LN_FORCE; + break; + case 'n': + flag |= LN_NODEREFERENCE; + break; + default: + usage(ln_usage); } - - if (linkIntoDirFlag == TRUE) - free(linkName); - - argv++; } - return( TRUE); + while(optind<(argc-1)) { + if (fs_link(argv[optind], argv[argc-1], flag)==FALSE) + return(FALSE); + optind++; + } + return(TRUE); } /* |