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src: add option '--force-overwrite'

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This commit is contained in:
Markus F.X.J. Oberhumer
2022-11-16 12:52:53 +01:00
parent 627e733a30
commit 3cf102334f
4 changed files with 38 additions and 31 deletions
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src/work.cpp
+13 -11
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@@ -68,6 +68,8 @@ void do_one_file(const char *iname, char *oname) {
else
throwIOException(iname, errno);
}
if (S_ISDIR(st.st_mode))
throwIOException("is a directory -- skipped");
if (!(S_ISREG(st.st_mode)))
throwIOException("not a regular file -- skipped");
#if defined(__unix__)
@@ -114,22 +116,22 @@ void do_one_file(const char *iname, char *oname) {
throwIOException("data not written to a terminal; Use '-f' to force.");
} else {
char tname[ACC_FN_PATH_MAX + 1];
if (opt->output_name)
if (opt->output_name) {
strcpy(tname, opt->output_name);
else {
if (opt->force_overwrite || opt->force >= 2) {
#if (HAVE_CHMOD)
r = chmod(tname, 0777);
IGNORE_ERROR(r);
#endif
r = unlink(tname);
IGNORE_ERROR(r);
}
} else {
if (!maketempname(tname, sizeof(tname), iname, ".upx"))
throwIOException("could not create a temporary file name");
}
if (opt->force >= 2) {
#if (HAVE_CHMOD)
r = chmod(tname, 0777);
IGNORE_ERROR(r);
#endif
r = unlink(tname);
IGNORE_ERROR(r);
}
int flags = O_CREAT | O_WRONLY | O_BINARY;
if (opt->force)
if (opt->force_overwrite || opt->force)
flags |= O_TRUNC;
else
flags |= O_EXCL;