diff options
| -rw-r--r-- | applets/applets.c | 7 | ||||
| -rw-r--r-- | include/libbb.h | 9 | ||||
| -rw-r--r-- | libbb/xreadlink.c | 22 |
3 files changed, 24 insertions, 14 deletions
diff --git a/applets/applets.c b/applets/applets.c index c2040b9..ec268ca 100644 --- a/applets/applets.c +++ b/applets/applets.c @@ -546,7 +546,7 @@ static int busybox_main(char **argv) help: output_width = 80; if (ENABLE_FEATURE_AUTOWIDTH) { - /* Obtain the terminal width. */ + /* Obtain the terminal width */ get_terminal_width_height(0, &output_width, NULL); } /* leading tab and room to wrap */ @@ -580,12 +580,11 @@ static int busybox_main(char **argv) if (ENABLE_FEATURE_INSTALLER && strcmp(argv[1], "--install") == 0) { const char *busybox; - busybox = xmalloc_readlink_or_warn(bb_busybox_exec_path); + busybox = xmalloc_readlink(bb_busybox_exec_path); if (!busybox) busybox = bb_busybox_exec_path; /* -s makes symlinks */ - install_links(busybox, - argv[2] && strcmp(argv[2], "-s") == 0); + install_links(busybox, argv[2] && strcmp(argv[2], "-s") == 0); return 0; } diff --git a/include/libbb.h b/include/libbb.h index cf00b52..f165894 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -249,9 +249,10 @@ void xmove_fd(int, int); DIR *xopendir(const char *path); DIR *warn_opendir(const char *path); -char *xrealloc_getcwd_or_warn(char *cwd); +/* UNUSED: char *xmalloc_realpath(const char *path); */ +char *xmalloc_readlink(const char *path); char *xmalloc_readlink_or_warn(const char *path); -char *xmalloc_realpath(const char *path); +char *xrealloc_getcwd_or_warn(char *cwd); //TODO: signal(sid, f) is the same? then why? @@ -317,8 +318,8 @@ enum { }; /* Create stream socket, and allocate suitable lsa. * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) - * af == AF_UNSPEC will result in trying to create IPv6, and - * if kernel doesn't support it, IPv4. + * af == AF_UNSPEC will result in trying to create IPv6 socket, + * and if kernel doesn't support it, IPv4. */ int xsocket_type(len_and_sockaddr **lsap, USE_FEATURE_IPV6(int af,) int sock_type); int xsocket_stream(len_and_sockaddr **lsap); diff --git a/libbb/xreadlink.c b/libbb/xreadlink.c index 18a8b94..4d87b94 100644 --- a/libbb/xreadlink.c +++ b/libbb/xreadlink.c @@ -10,8 +10,7 @@ * NOTE: This function returns a malloced char* that you will have to free * yourself. You have been warned. */ - -char *xmalloc_readlink_or_warn(const char *path) +char *xmalloc_readlink(const char *path) { enum { GROWBY = 80 }; /* how large we will grow strings by */ @@ -20,20 +19,30 @@ char *xmalloc_readlink_or_warn(const char *path) do { buf = xrealloc(buf, bufsize += GROWBY); - readsize = readlink(path, buf, bufsize); /* 1st try */ + readsize = readlink(path, buf, bufsize); if (readsize == -1) { - bb_perror_msg("%s", path); free(buf); return NULL; } - } - while (bufsize < readsize + 1); + } while (bufsize < readsize + 1); buf[readsize] = '\0'; return buf; } +char *xmalloc_readlink_or_warn(const char *path) +{ + char *buf = xmalloc_readlink(path); + if (!buf) { + /* EINVAL => "file: Invalid argument" => puzzled user */ + bb_error_msg("%s: cannot read link (not a symlink?)", path); + } + return buf; +} + +/* UNUSED */ +#if 0 char *xmalloc_realpath(const char *path) { #if defined(__GLIBC__) && !defined(__UCLIBC__) @@ -46,3 +55,4 @@ char *xmalloc_realpath(const char *path) return xstrdup(realpath(path, buf)); #endif } +#endif |