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https://github.com/golang/go
synced 2024-11-22 00:14:42 -07:00
ld: add -u flag to check safe bits; discard old -u, -x flags
R=r, r2 CC=golang-dev https://golang.org/cl/1707043
This commit is contained in:
parent
121a16fa95
commit
6519a6ba5b
@ -135,16 +135,6 @@ main(int argc, char *argv[])
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HEADTYPE = atolwhex(EARGF(usage()));
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/* do something about setting INITTEXT */
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break;
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case 'x': /* produce export table */
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doexp = 1;
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if(argv[1] != nil && argv[1][0] != '-' && !isobjfile(argv[1]))
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readundefs(ARGF(), SEXPORT);
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break;
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case 'u': /* produce dynamically loadable module */
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dlm = 1;
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if(argv[1] != nil && argv[1][0] != '-' && !isobjfile(argv[1]))
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readundefs(ARGF(), SIMPORT);
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break;
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case 'V':
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print("%cl version %s\n", thechar, getgoversion());
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errorexit();
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@ -129,16 +129,6 @@ main(int argc, char *argv[])
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case 'r':
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rpath = EARGF(usage());
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break;
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case 'x': /* produce export table */
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doexp = 1;
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if(argv[1] != nil && argv[1][0] != '-' && !isobjfile(argv[1]))
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readundefs(ARGF(), SEXPORT);
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break;
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case 'u': /* produce dynamically loadable module */
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dlm = 1;
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if(argv[1] != nil && argv[1][0] != '-' && !isobjfile(argv[1]))
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readundefs(ARGF(), SIMPORT);
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break;
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case 'V':
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print("%cl version %s\n", thechar, getgoversion());
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errorexit();
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@ -134,16 +134,6 @@ main(int argc, char *argv[])
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case 'r':
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rpath = EARGF(usage());
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break;
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case 'x': /* produce export table */
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doexp = 1;
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if(argv[1] != nil && argv[1][0] != '-' && !isobjfile(argv[1]))
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readundefs(ARGF(), SEXPORT);
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break;
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case 'u': /* produce dynamically loadable module */
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dlm = 1;
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if(argv[1] != nil && argv[1][0] != '-' && !isobjfile(argv[1]))
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readundefs(ARGF(), SIMPORT);
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break;
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case 'V':
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print("%cl version %s\n", thechar, getgoversion());
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errorexit();
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@ -84,19 +84,28 @@ ldpkg(Biobuf *f, char *pkg, int64 len, char *filename)
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if((int)len != len) {
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fprint(2, "%s: too much pkg data in %s\n", argv0, filename);
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if(debug['u'])
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errorexit();
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return;
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}
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data = mal(len+1);
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if(Bread(f, data, len) != len) {
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fprint(2, "%s: short pkg read %s\n", argv0, filename);
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if(debug['u'])
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errorexit();
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return;
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}
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data[len] = '\0';
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// first \n$$ marks beginning of exports - skip rest of line
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p0 = strstr(data, "\n$$");
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if(p0 == nil)
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if(p0 == nil) {
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if(debug['u']) {
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fprint(2, "%s: cannot find export data in %s\n", argv0, filename);
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errorexit();
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}
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return;
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}
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p0 += 3;
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while(*p0 != '\n' && *p0 != '\0')
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p0++;
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@ -105,6 +114,8 @@ ldpkg(Biobuf *f, char *pkg, int64 len, char *filename)
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p1 = strstr(p0, "\n$$");
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if(p1 == nil) {
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fprint(2, "%s: cannot find end of exports in %s\n", argv0, filename);
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if(debug['u'])
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errorexit();
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return;
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}
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while(p0 < p1 && (*p0 == ' ' || *p0 == '\t' || *p0 == '\n'))
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@ -112,6 +123,8 @@ ldpkg(Biobuf *f, char *pkg, int64 len, char *filename)
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if(p0 < p1) {
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if(strncmp(p0, "package ", 8) != 0) {
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fprint(2, "%s: bad package section in %s - %s\n", argv0, filename, p0);
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if(debug['u'])
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errorexit();
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return;
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}
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p0 += 8;
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@ -120,6 +133,10 @@ ldpkg(Biobuf *f, char *pkg, int64 len, char *filename)
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name = p0;
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while(p0 < p1 && *p0 != ' ' && *p0 != '\t' && *p0 != '\n')
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p0++;
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if(debug['u'] && memcmp(p0, " safe\n", 6) != 0) {
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fprint(2, "%s: load of unsafe package %s\n", argv0, filename);
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errorexit();
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}
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if(p0 < p1) {
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*p0++ = '\0';
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if(strcmp(pkg, "main") == 0 && strcmp(name, "main") != 0)
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@ -140,6 +157,8 @@ ldpkg(Biobuf *f, char *pkg, int64 len, char *filename)
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p1 = strstr(p0, "\n$$");
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if(p1 == nil) {
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fprint(2, "%s: cannot find end of local types in %s\n", argv0, filename);
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if(debug['u'])
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errorexit();
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return;
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}
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@ -151,6 +170,8 @@ ldpkg(Biobuf *f, char *pkg, int64 len, char *filename)
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p0 = strchr(p0+1, '\n');
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if(p0 == nil) {
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fprint(2, "%s: found $$ // dynimport but no newline in %s\n", argv0, filename);
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if(debug['u'])
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errorexit();
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return;
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}
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p1 = strstr(p0, "\n$$");
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@ -158,6 +179,8 @@ ldpkg(Biobuf *f, char *pkg, int64 len, char *filename)
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p1 = strstr(p0, "\n!\n");
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if(p1 == nil) {
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fprint(2, "%s: cannot find end of // dynimport section in %s\n", argv0, filename);
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if(debug['u'])
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errorexit();
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return;
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}
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loaddynimport(filename, p0 + 1, p1 - (p0+1));
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@ -169,6 +192,8 @@ ldpkg(Biobuf *f, char *pkg, int64 len, char *filename)
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p0 = strchr(p0+1, '\n');
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if(p0 == nil) {
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fprint(2, "%s: found $$ // dynexporg but no newline in %s\n", argv0, filename);
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if(debug['u'])
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errorexit();
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return;
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}
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p1 = strstr(p0, "\n$$");
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@ -176,6 +201,8 @@ ldpkg(Biobuf *f, char *pkg, int64 len, char *filename)
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p1 = strstr(p0, "\n!\n");
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if(p1 == nil) {
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fprint(2, "%s: cannot find end of // dynexporg section in %s\n", argv0, filename);
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if(debug['u'])
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errorexit();
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return;
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}
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loaddynexport(filename, pkg, p0 + 1, p1 - (p0+1));
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