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Merge branch 'jk/tighten-alloc'

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Update various codepaths to avoid manually-counted malloc().

* jk/tighten-alloc: (22 commits)
  ewah: convert to REALLOC_ARRAY, etc
  convert ewah/bitmap code to use xmalloc
  diff_populate_gitlink: use a strbuf
  transport_anonymize_url: use xstrfmt
  git-compat-util: drop mempcpy compat code
  sequencer: simplify memory allocation of get_message
  test-path-utils: fix normalize_path_copy output buffer size
  fetch-pack: simplify add_sought_entry
  fast-import: simplify allocation in start_packfile
  write_untracked_extension: use FLEX_ALLOC helper
  prepare_{git,shell}_cmd: use argv_array
  use st_add and st_mult for allocation size computation
  convert trivial cases to FLEX_ARRAY macros
  use xmallocz to avoid size arithmetic
  convert trivial cases to ALLOC_ARRAY
  convert manual allocations to argv_array
  argv-array: add detach function
  add helpers for allocating flex-array structs
  harden REALLOC_ARRAY and xcalloc against size_t overflow
  tree-diff: catch integer overflow in combine_diff_path allocation
  ...
This commit is contained in:
Junio C Hamano
2016-02-26 13:37:16 -08:00
parent 3ed26a44b3 08c95df8fa
commit 11529ecec9
91 changed files with 440 additions and 481 deletions
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28
exec_cmd.c
View File

@ -1,6 +1,7 @@
#include "cache.h"
#include "exec_cmd.h"
#include "quote.h"
#include "argv-array.h"
#define MAX_ARGS 32
static const char *argv_exec_path;
@ -105,32 +106,25 @@ void setup_path(void)
strbuf_release(&new_path);
}
const char **prepare_git_cmd(const char **argv)
const char **prepare_git_cmd(struct argv_array *out, const char **argv)
{
int argc;
const char **nargv;
for (argc = 0; argv[argc]; argc++)
; /* just counting */
nargv = xmalloc(sizeof(*nargv) * (argc + 2));
nargv[0] = "git";
for (argc = 0; argv[argc]; argc++)
nargv[argc + 1] = argv[argc];
nargv[argc + 1] = NULL;
return nargv;
argv_array_push(out, "git");
argv_array_pushv(out, argv);
return out->argv;
}
int execv_git_cmd(const char **argv) {
const char **nargv = prepare_git_cmd(argv);
trace_argv_printf(nargv, "trace: exec:");
struct argv_array nargv = ARGV_ARRAY_INIT;
prepare_git_cmd(&nargv, argv);
trace_argv_printf(nargv.argv, "trace: exec:");
/* execvp() can only ever return if it fails */
sane_execvp("git", (char **)nargv);
sane_execvp("git", (char **)nargv.argv);
trace_printf("trace: exec failed: %s\n", strerror(errno));
free(nargv);
argv_array_clear(&nargv);
return -1;
}