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-rw-r--r--src/nvim/main.c5
-rw-r--r--src/nvim/option.c6
-rw-r--r--src/nvim/os/env.c57
-rw-r--r--src/nvim/os/fs.c6
-rw-r--r--src/nvim/path.c47
5 files changed, 87 insertions, 34 deletions
diff --git a/src/nvim/main.c b/src/nvim/main.c
index 40b553e93c..3831f0ac6b 100644
--- a/src/nvim/main.c
+++ b/src/nvim/main.c
@@ -1223,7 +1223,8 @@ static void init_path(char *exename)
size_t exepathlen = MAXPATHL;
// Make v:progpath absolute.
if (os_exepath(exepath, &exepathlen) != 0) {
- EMSG2(e_intern2, "init_path()");
+ // Fall back to argv[0]. Missing procfs? #6734
+ path_guess_exepath(exename, exepath, sizeof(exepath));
}
set_vim_var_string(VV_PROGPATH, exepath, -1);
set_vim_var_string(VV_PROGNAME, (char *)path_tail((char_u *)exename), -1);
@@ -1684,7 +1685,7 @@ static bool do_user_initialization(void)
do {
const char *dir;
size_t dir_len;
- iter = vim_colon_env_iter(config_dirs, iter, &dir, &dir_len);
+ iter = vim_env_iter(':', config_dirs, iter, &dir, &dir_len);
if (dir == NULL || dir_len == 0) {
break;
}
diff --git a/src/nvim/option.c b/src/nvim/option.c
index c36ca1bfe9..392a2f3908 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -341,7 +341,7 @@ static inline size_t compute_double_colon_len(const char *const val,
do {
size_t dir_len;
const char *dir;
- iter = vim_colon_env_iter(val, iter, &dir, &dir_len);
+ iter = vim_env_iter(':', val, iter, &dir, &dir_len);
if (dir != NULL && dir_len > 0) {
ret += ((dir_len + memcnt(dir, ',', dir_len) + common_suf_len
+ !after_pathsep(dir, dir + dir_len)) * 2
@@ -385,8 +385,8 @@ static inline char *add_colon_dirs(char *dest, const char *const val,
do {
size_t dir_len;
const char *dir;
- iter = (forward ? vim_colon_env_iter : vim_colon_env_iter_rev)(
- val, iter, &dir, &dir_len);
+ iter = (forward ? vim_env_iter : vim_env_iter_rev)(':', val, iter, &dir,
+ &dir_len);
if (dir != NULL && dir_len > 0) {
dest = strcpy_comma_escaped(dest, dir, dir_len);
if (!after_pathsep(dest - 1, dest)) {
diff --git a/src/nvim/os/env.c b/src/nvim/os/env.c
index 8f7a6e72b5..a7d1037cfc 100644
--- a/src/nvim/os/env.c
+++ b/src/nvim/os/env.c
@@ -521,10 +521,11 @@ static char *remove_tail(char *path, char *pend, char *dirname)
return pend;
}
-/// Iterate over colon-separated list
+/// Iterate over a delimited list.
///
/// @note Environment variables must not be modified during iteration.
///
+/// @param[in] delim Delimiter character.
/// @param[in] val Value of the environment variable to iterate over.
/// @param[in] iter Pointer used for iteration. Must be NULL on first
/// iteration.
@@ -533,18 +534,19 @@ static char *remove_tail(char *path, char *pend, char *dirname)
/// @param[out] len Location where current directory length should be saved.
///
/// @return Next iter argument value or NULL when iteration should stop.
-const void *vim_colon_env_iter(const char *const val,
- const void *const iter,
- const char **const dir,
- size_t *const len)
- FUNC_ATTR_NONNULL_ARG(1, 3, 4) FUNC_ATTR_WARN_UNUSED_RESULT
+const void *vim_env_iter(const char delim,
+ const char *const val,
+ const void *const iter,
+ const char **const dir,
+ size_t *const len)
+ FUNC_ATTR_NONNULL_ARG(2, 4, 5) FUNC_ATTR_WARN_UNUSED_RESULT
{
const char *varval = (const char *) iter;
if (varval == NULL) {
varval = val;
}
*dir = varval;
- const char *const dirend = strchr(varval, ':');
+ const char *const dirend = strchr(varval, delim);
if (dirend == NULL) {
*len = strlen(varval);
return NULL;
@@ -554,10 +556,11 @@ const void *vim_colon_env_iter(const char *const val,
}
}
-/// Iterate over colon-separated list in reverse order
+/// Iterate over a delimited list in reverse order.
///
/// @note Environment variables must not be modified during iteration.
///
+/// @param[in] delim Delimiter character.
/// @param[in] val Value of the environment variable to iterate over.
/// @param[in] iter Pointer used for iteration. Must be NULL on first
/// iteration.
@@ -566,18 +569,19 @@ const void *vim_colon_env_iter(const char *const val,
/// @param[out] len Location where current directory length should be saved.
///
/// @return Next iter argument value or NULL when iteration should stop.
-const void *vim_colon_env_iter_rev(const char *const val,
- const void *const iter,
- const char **const dir,
- size_t *const len)
- FUNC_ATTR_NONNULL_ARG(1, 3, 4) FUNC_ATTR_WARN_UNUSED_RESULT
+const void *vim_env_iter_rev(const char delim,
+ const char *const val,
+ const void *const iter,
+ const char **const dir,
+ size_t *const len)
+ FUNC_ATTR_NONNULL_ARG(2, 4, 5) FUNC_ATTR_WARN_UNUSED_RESULT
{
const char *varend = (const char *) iter;
if (varend == NULL) {
varend = val + strlen(val) - 1;
}
- const size_t varlen = (size_t) (varend - val) + 1;
- const char *const colon = xmemrchr(val, ':', varlen);
+ const size_t varlen = (size_t)(varend - val) + 1;
+ const char *const colon = xmemrchr(val, (uint8_t)delim, varlen);
if (colon == NULL) {
*len = varlen;
*dir = val;
@@ -634,18 +638,17 @@ char *vim_getenv(const char *name)
char exe_name[MAXPATHL];
// Find runtime path relative to the nvim binary: ../share/nvim/runtime
if (vim_path == NULL) {
- size_t exe_name_len = MAXPATHL;
- if (os_exepath(exe_name, &exe_name_len) == 0) {
- char *path_end = (char *)path_tail_with_sep((char_u *)exe_name);
- *path_end = '\0'; // remove the trailing "nvim.exe"
- path_end = (char *)path_tail((char_u *)exe_name);
- *path_end = '\0'; // remove the trailing "bin/"
- if (append_path(
- exe_name,
- "share" _PATHSEPSTR "nvim" _PATHSEPSTR "runtime" _PATHSEPSTR,
- MAXPATHL) == OK) {
- vim_path = exe_name; // -V507
- }
+ xstrlcpy(exe_name, (char *)get_vim_var_str(VV_PROGPATH),
+ sizeof(exe_name));
+ char *path_end = (char *)path_tail_with_sep((char_u *)exe_name);
+ *path_end = '\0'; // remove the trailing "nvim.exe"
+ path_end = (char *)path_tail((char_u *)exe_name);
+ *path_end = '\0'; // remove the trailing "bin/"
+ if (append_path(
+ exe_name,
+ "share" _PATHSEPSTR "nvim" _PATHSEPSTR "runtime" _PATHSEPSTR,
+ MAXPATHL) == OK) {
+ vim_path = exe_name; // -V507
}
}
diff --git a/src/nvim/os/fs.c b/src/nvim/os/fs.c
index aaa750db50..b9a9480cb8 100644
--- a/src/nvim/os/fs.c
+++ b/src/nvim/os/fs.c
@@ -196,11 +196,13 @@ int os_nodetype(const char *name)
}
/// Gets the absolute path of the currently running executable.
+/// May fail if procfs is missing. #6734
+/// @see path_exepath
///
-/// @param[out] buffer Returns the path string.
+/// @param[out] buffer Full path to the executable.
/// @param[in] size Size of `buffer`.
///
-/// @return `0` on success, or libuv error code on failure.
+/// @return 0 on success, or libuv error code.
int os_exepath(char *buffer, size_t *size)
FUNC_ATTR_NONNULL_ALL
{
diff --git a/src/nvim/path.c b/src/nvim/path.c
index 12952f49db..23ed4d381e 100644
--- a/src/nvim/path.c
+++ b/src/nvim/path.c
@@ -2237,3 +2237,50 @@ int path_is_absolute_path(const char_u *fname)
return *fname == '/' || *fname == '~';
#endif
}
+
+/// Builds a full path from an invocation name `argv0`, based on heuristics.
+///
+/// @param[in] argv0 Name by which Nvim was invoked.
+/// @param[out] buf Guessed full path to `argv0`.
+/// @param[in] bufsize Size of `buf`.
+///
+/// @see os_exepath
+void path_guess_exepath(const char *argv0, char *buf, size_t bufsize)
+ FUNC_ATTR_NONNULL_ALL
+{
+ char *path = getenv("PATH");
+
+ if (path == NULL || path_is_absolute_path((char_u *)argv0)) {
+ xstrlcpy(buf, argv0, bufsize);
+ } else if (argv0[0] == '.' || strchr(argv0, PATHSEP)) {
+ // Relative to CWD.
+ if (os_dirname((char_u *)buf, MAXPATHL) != OK) {
+ buf[0] = NUL;
+ }
+ xstrlcat(buf, PATHSEPSTR, bufsize);
+ xstrlcat(buf, argv0, bufsize);
+ } else {
+ // Search $PATH for plausible location.
+ const void *iter = NULL;
+ do {
+ const char *dir;
+ size_t dir_len;
+ iter = vim_env_iter(ENV_SEPCHAR, path, iter, &dir, &dir_len);
+ if (dir == NULL || dir_len == 0) {
+ break;
+ }
+ if (dir_len + 1 > sizeof(NameBuff)) {
+ continue;
+ }
+ xstrlcpy((char *)NameBuff, dir, dir_len + 1);
+ xstrlcat((char *)NameBuff, PATHSEPSTR, sizeof(NameBuff));
+ xstrlcat((char *)NameBuff, argv0, sizeof(NameBuff));
+ if (os_can_exe(NameBuff, NULL, false)) {
+ xstrlcpy(buf, (char *)NameBuff, bufsize);
+ return;
+ }
+ } while (iter != NULL);
+ // Not found in $PATH, fall back to argv0.
+ xstrlcpy(buf, argv0, bufsize);
+ }
+}
generated by cgit (git 2.34.1) at 2025-10-31 08:24:15 +0000