In the event that nftw() encounters a symbolic link which refers to a nonexisting file, the "struct stat" info will not have been filled in if FTW_PHYS is not specified (because stat() is used instead of lstat()). This patch clarifies the documentation and corrects the sample code to reflect this. Reported to Fedora in https://bugzilla.redhat.com/show_bug.cgi?id=1422736 patch is against today's git diff --git a/man3/ftw.3 b/man3/ftw.3 index b421c00..7b54621 100644 --- a/man3/ftw.3 +++ b/man3/ftw.3 @@ -165,7 +165,9 @@ is a symbolic link, and \fBFTW_PHYS\fP was set in \fIflags\fP. .B FTW_SLN .I fpath is a symbolic link pointing to a nonexistent file. -(This occurs only if \fBFTW_PHYS\fP is not set.) +(This occurs only if \fBFTW_PHYS\fP is not set, and the data +.I sb +points to during this callback will not be defined.) .PP The fourth argument that .BR nftw () @@ -421,13 +423,17 @@ static int display_info(const char *fpath, const struct stat *sb, int tflag, struct FTW *ftwbuf) { - printf("%\-3s %2d %7jd %\-40s %d %s\\n", - (tflag == FTW_D) ? "d" : (tflag == FTW_DNR) ? "dnr" : - (tflag == FTW_DP) ? "dp" : (tflag == FTW_F) ? "f" : - (tflag == FTW_NS) ? "ns" : (tflag == FTW_SL) ? "sl" : - (tflag == FTW_SLN) ? "sln" : "???", - ftwbuf\->level, (intmax_t) sb\->st_size, - fpath, ftwbuf\->base, fpath + ftwbuf\->base); + if (tflag == FTW_SLN) + printf("sln %2d \------- %-40s %d %s\n", + ftwbuf\->level, fpath, ftwbuf\->base, fpath + ftwbuf\->base); + else + printf("%\-3s %2d %7jd %\-40s %d %s\\n", + (tflag == FTW_D) ? "d" : (tflag == FTW_DNR) ? "dnr" : + (tflag == FTW_DP) ? "dp" : (tflag == FTW_F) ? "f" : + (tflag == FTW_NS) ? "ns" : (tflag == FTW_SL) ? "sl" : + "???", + ftwbuf\->level, (intmax_t) sb\->st_size, + fpath, ftwbuf\->base, fpath + ftwbuf\->base); return 0; /* To tell nftw() to continue */ } -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
