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ld.so: add an --argv0 option [BZ #16124]

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This commit is contained in:
Vincent Mihalkovic
2020-09-29 12:34:39 +02:00
committed by Florian Weimer
parent d3c5702747
commit c670278934
5 changed files with 97 additions and 3 deletions
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17
elf/rtld.c
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@ -1202,6 +1202,8 @@ dl_main (const ElfW(Phdr) *phdr,
installing it. */
rtld_is_main = true;
char *argv0 = NULL;
/* Note the place where the dynamic linker actually came from. */
GL(dl_rtld_map).l_name = rtld_progname;
@ -1259,6 +1261,14 @@ dl_main (const ElfW(Phdr) *phdr,
else if (! strcmp (_dl_argv[1], "--preload") && _dl_argc > 2)
{
preloadarg = _dl_argv[2];
_dl_skip_args += 2;
_dl_argc -= 2;
_dl_argv += 2;
}
else if (! strcmp (_dl_argv[1], "--argv0") && _dl_argc > 2)
{
argv0 = _dl_argv[2];
_dl_skip_args += 2;
_dl_argc -= 2;
_dl_argv += 2;
@ -1292,7 +1302,8 @@ of this helper program; chances are you did not intend to run this program.\n\
--inhibit-rpath LIST ignore RUNPATH and RPATH information in object names\n\
in LIST\n\
--audit LIST use objects named in LIST as auditors\n\
--preload LIST preload objects named in LIST\n");
--preload LIST preload objects named in LIST\n\
--argv0 STRING set argv[0] to STRING before running\n");
++_dl_skip_args;
--_dl_argc;
@ -1384,6 +1395,10 @@ of this helper program; chances are you did not intend to run this program.\n\
break;
}
#endif
/* Set the argv[0] string now that we've processed the executable. */
if (argv0 != NULL)
_dl_argv[0] = argv0;
}
else
{