From 97dc8cb71d96a4bbfda0aa51740433d5da825b6a Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Sun, 25 Jan 2015 02:20:43 -0600 Subject: add support for $ORIGIN This is for example required, used and tested with OpenJDK 7. No regressions found, while running the testsuite with embedded-test. --- ldso/ldso/ldso.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'ldso/ldso/ldso.c') diff --git a/ldso/ldso/ldso.c b/ldso/ldso/ldso.c index 56196292b..7367f1737 100644 --- a/ldso/ldso/ldso.c +++ b/ldso/ldso/ldso.c @@ -403,6 +403,20 @@ static ptrdiff_t _dl_build_local_scope (struct elf_resolve **list, return p - list; } +static void _dl_setup_progname(const char *argv0) +{ + char image[PATH_MAX]; + ssize_t s; + + s = _dl_readlink(AT_FDCWD, "/proc/self/exe", image, sizeof(image)); + if (s > 0 && image[0] == '/') { + image[s] = 0; + _dl_progname = _dl_strdup(image); + } else if (argv0) { + _dl_progname = argv0; + } +} + void *_dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr, ElfW(auxv_t) auxvt[AT_EGID + 1], char **envp, char **argv DL_GET_READY_TO_RUN_EXTRA_PARMS) @@ -454,9 +468,7 @@ void *_dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr, * been fixed up by now. Still no function calls outside of this * library, since the dynamic resolver is not yet ready. */ - if (argv[0]) { - _dl_progname = argv[0]; - } + _dl_setup_progname(argv[0]); #ifdef __DSBT__ _dl_ldso_dsbt = (void *)tpnt->dynamic_info[DT_DSBT_BASE_IDX]; -- cgit v1.2.3