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| author | Julien Isorce <j.isorce@samsung.com> | 2016-05-10 13:18:06 +0100 |
|---|---|---|
| committer | hyokeun <hyokeun.jeon@samsung.com> | 2016-09-06 16:28:53 +0900 |
| commit | cac56c4878d27ef636188093ba133729519cc22e (patch) | |
| tree | 3b68df408aec83e529ed6e3fe2d3678451aab6b4 | |
| parent | af6d0da3948e5cb82c176c29d40b438e60747f7d (diff) | |
| download | qemu-cac56c4878d27ef636188093ba133729519cc22e.tar.gz qemu-cac56c4878d27ef636188093ba133729519cc22e.tar.bz2 qemu-cac56c4878d27ef636188093ba133729519cc22e.zip | |
binfmt: translate symbolic links correctly with realpath
Change-Id: Ic0eeac9de40a8e1082c83b442829ac28f68bff04
Signed-off-by: Julien Isorce <j.isorce@samsung.com>
Signed-off-by: Yury Usishchev <y.usishchev@samsung.com>
| -rw-r--r-- | linux-user/binfmt.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/linux-user/binfmt.c b/linux-user/binfmt.c index 2a9009621..e9e9b6583 100644 --- a/linux-user/binfmt.c +++ b/linux-user/binfmt.c @@ -4,6 +4,7 @@ #include <libgen.h> #include <string.h> #include <stdlib.h> +#include <limits.h> int main(int argc, char **argv, char **envp) @@ -29,10 +30,20 @@ int main(int argc, char **argv, char **envp) /* Now argv[0] is the real qemu binary name */ { - char *hostbin; + int len; int r; + char buf[PATH_MAX]; + char *hostbin; + char *path; + + /* Follow symbolic link if any. */ + path = realpath(argv[1], buf); + if (path == NULL) { + /* Error occured, falling back to original argument */ + path = argv[1]; + } - r = asprintf(&hostbin, "/emul/%s", argv[1]); + r = asprintf(&hostbin, "/emul/%s", path); if (!access(hostbin, X_OK) && (r > 0)) { /* * We found a host binary replacement for the non-host binary. Let's |