From 0b4551faf520e44a9a0bf2ac72b3dcd6a145a0a1 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Mon, 10 Jul 2000 16:44:03 +0000 Subject: [PATCH] From Matt Kraai : Howdy, Bug #1006 reports that ln -s /tmp/foo . does not work correctly. In fact, it appears that any instantiation of ln -s FILE... DIRECTORY does not work. The following patch adds support for this form, which then fixes the particular instance noted in the bug report. In the process, I needed the basename function. This appears in the string.h provided by glibc, but not uC-libc. So I wrote my own to go in utility.c, called get_last_path_component. I also modified the basename utility to use this function. At some point it might be desirous to use the basename from the library if it exists, and otherwise compile our own. But I don't know how to do this. Matt --- basename.c | 10 +--------- coreutils/basename.c | 10 +--------- coreutils/ln.c | 18 +++++++++++++++++- internal.h | 1 + ln.c | 18 +++++++++++++++++- utility.c | 17 +++++++++++++++++ 6 files changed, 54 insertions(+), 20 deletions(-) diff --git a/basename.c b/basename.c index ac371d274..fa15aa979 100644 --- a/basename.c +++ b/basename.c @@ -43,14 +43,7 @@ extern int basename_main(int argc, char **argv) argv++; - s1=*argv+strlen(*argv)-1; - while (s1 && *s1 == '/') { - *s1 = '\0'; - s1--; - } - s = strrchr(*argv, '/'); - if (s==NULL) s=*argv; - else s++; + s = get_last_path_component(*argv); if (argc>2) { argv++; @@ -62,4 +55,3 @@ extern int basename_main(int argc, char **argv) printf("%s\n", s); return(TRUE); } - diff --git a/coreutils/basename.c b/coreutils/basename.c index ac371d274..fa15aa979 100644 --- a/coreutils/basename.c +++ b/coreutils/basename.c @@ -43,14 +43,7 @@ extern int basename_main(int argc, char **argv) argv++; - s1=*argv+strlen(*argv)-1; - while (s1 && *s1 == '/') { - *s1 = '\0'; - s1--; - } - s = strrchr(*argv, '/'); - if (s==NULL) s=*argv; - else s++; + s = get_last_path_component(*argv); if (argc>2) { argv++; @@ -62,4 +55,3 @@ extern int basename_main(int argc, char **argv) printf("%s\n", s); return(TRUE); } - diff --git a/coreutils/ln.c b/coreutils/ln.c index 57e412dc8..beaa58fac 100644 --- a/coreutils/ln.c +++ b/coreutils/ln.c @@ -52,7 +52,7 @@ static int followLinks = TRUE; extern int ln_main(int argc, char **argv) { - char *linkName; + char *linkName, *dirName; int linkIntoDirFlag; int stopIt = FALSE; @@ -104,6 +104,9 @@ extern int ln_main(int argc, char **argv) exit FALSE; } + if (linkIntoDirFlag == TRUE) + dirName = linkName; + while (argc-- >= 2) { #if 0 char srcName[BUFSIZ + 1]; @@ -126,6 +129,14 @@ extern int ln_main(int argc, char **argv) srcName[nChars] = '\0'; } #endif + if (linkIntoDirFlag == TRUE) { + char *baseName = get_last_path_component(*argv); + linkName = (char *)malloc(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); @@ -143,6 +154,11 @@ extern int ln_main(int argc, char **argv) perror(linkName); exit FALSE; } + + if (linkIntoDirFlag) + free(linkName); + + argv++; } return( TRUE); } diff --git a/internal.h b/internal.h index 362df3270..a4772b820 100644 --- a/internal.h +++ b/internal.h @@ -259,6 +259,7 @@ extern void *xmalloc (size_t size); extern int find_real_root_device_name(char* name); extern char *get_line_from_file(FILE *file); extern char process_escape_sequence(char **ptr); +extern char *get_last_path_component(char *path); /* These parse entries in /etc/passwd and /etc/group. This is desirable * for BusyBox since we want to avoid using the glibc NSS stuff, which diff --git a/ln.c b/ln.c index 57e412dc8..beaa58fac 100644 --- a/ln.c +++ b/ln.c @@ -52,7 +52,7 @@ static int followLinks = TRUE; extern int ln_main(int argc, char **argv) { - char *linkName; + char *linkName, *dirName; int linkIntoDirFlag; int stopIt = FALSE; @@ -104,6 +104,9 @@ extern int ln_main(int argc, char **argv) exit FALSE; } + if (linkIntoDirFlag == TRUE) + dirName = linkName; + while (argc-- >= 2) { #if 0 char srcName[BUFSIZ + 1]; @@ -126,6 +129,14 @@ extern int ln_main(int argc, char **argv) srcName[nChars] = '\0'; } #endif + if (linkIntoDirFlag == TRUE) { + char *baseName = get_last_path_component(*argv); + linkName = (char *)malloc(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); @@ -143,6 +154,11 @@ extern int ln_main(int argc, char **argv) perror(linkName); exit FALSE; } + + if (linkIntoDirFlag) + free(linkName); + + argv++; } return( TRUE); } diff --git a/utility.c b/utility.c index a15ae68da..a313078cf 100644 --- a/utility.c +++ b/utility.c @@ -1675,6 +1675,23 @@ char process_escape_sequence(char **ptr) } #endif +#if defined BB_BASENAME || defined BB_LN +char *get_last_path_component(char *path) +{ + char *s=path+strlen(path)-1; + + /* strip trailing slashes */ + while (s && *s == '/') { + *s-- = '\0'; + } + + /* find last component */ + s = strrchr(path, '/'); + if (s==NULL) return path; + else return s+1; +} +#endif + /* END CODE */ /* Local Variables: -- 2.25.1