Blame SOURCES/ksh-20120801-cdfix2.patch
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diff -up ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c.cdfix2 ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c
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--- ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c.cdfix2 2013-02-01 16:46:50.441771371 +0100
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+++ ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c 2013-02-01 16:57:43.241784024 +0100
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@@ -61,6 +61,7 @@ int sh_diropenat(Shell_t *shp, int dir,
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{
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int fd,shfd;
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int savederrno=errno;
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+ struct stat fs;
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#ifndef AT_FDCWD
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NOT_USED(dir);
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#endif
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@@ -133,6 +134,13 @@ int sh_diropenat(Shell_t *shp, int dir,
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if(fd < 0)
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return fd;
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+
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+ if (!fstat(fd, &fs) && !S_ISDIR(fs.st_mode))
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+ {
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+ close(fd);
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+ errno = ENOTDIR;
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+ return -1;
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+ }
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/* Move fd to a number > 10 and *register* the fd number with the shell */
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shfd = sh_fcntl(fd, F_dupfd_cloexec, 10);
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