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Merge pull request #1532 from strangepete/fstat-directory-test

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file/open: check if directory
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Calvin Rose 2024-12-14 06:00:41 -08:00 committed by GitHub
commit a85eacadda
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1 changed files with 9 additions and 0 deletions
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src/core/io.c
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@ -31,6 +31,7 @@
#ifndef JANET_WINDOWS #ifndef JANET_WINDOWS
#include <fcntl.h> #include <fcntl.h>
#include <sys/stat.h>
#include <sys/wait.h> #include <sys/wait.h>
#include <unistd.h> #include <unistd.h>
#endif #endif
@ -164,6 +165,14 @@ JANET_CORE_FN(cfun_io_fopen,
} }
FILE *f = fopen((const char *)fname, (const char *)fmode); FILE *f = fopen((const char *)fname, (const char *)fmode);
if (f != NULL) { if (f != NULL) {
#ifndef JANET_WINDOWS
struct stat st;
fstat(fileno(f), &st);
if (S_ISDIR(st.st_mode)) {
fclose(f);
janet_panicf("cannot open directory: %s", fname);
}
#endif
size_t bufsize = janet_optsize(argv, argc, 2, BUFSIZ); size_t bufsize = janet_optsize(argv, argc, 2, BUFSIZ);
if (bufsize != BUFSIZ) { if (bufsize != BUFSIZ) {
int result = setvbuf(f, NULL, bufsize ? _IOFBF : _IONBF, bufsize); int result = setvbuf(f, NULL, bufsize ? _IOFBF : _IONBF, bufsize);