diff options
| -rw-r--r-- | src/basic/process-util.c | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/src/basic/process-util.c b/src/basic/process-util.c index 2c05f2fee4..66395b7de9 100644 --- a/src/basic/process-util.c +++ b/src/basic/process-util.c @@ -43,7 +43,10 @@ int get_process_state(pid_t pid) { assert(pid >= 0); p = procfs_file_alloca(pid, "stat"); + r = read_one_line_file(p, &line); + if (r == -ENOENT) + return -ESRCH; if (r < 0) return r; @@ -87,8 +90,11 @@ int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char * p = procfs_file_alloca(pid, "cmdline"); f = fopen(p, "re"); - if (!f) + if (!f) { + if (errno == ENOENT) + return -ESRCH; return -errno; + } if (max_length == 0) { size_t len = 0, allocated = 0; @@ -182,8 +188,11 @@ int is_kernel_thread(pid_t pid) { p = procfs_file_alloca(pid, "cmdline"); f = fopen(p, "re"); - if (!f) + if (!f) { + if (errno == ENOENT) + return -ESRCH; return -errno; + } count = fread(&c, 1, 1, f); eof = feof(f); @@ -199,13 +208,18 @@ int is_kernel_thread(pid_t pid) { int get_process_capeff(pid_t pid, char **capeff) { const char *p; + int r; assert(capeff); assert(pid >= 0); p = procfs_file_alloca(pid, "status"); - return get_status_field(p, "\nCapEff:", capeff); + r = get_status_field(p, "\nCapEff:", capeff); + if (r == -ENOENT) + return -ESRCH; + + return r; } static int get_process_link_contents(const char *proc_file, char **name) { @@ -215,8 +229,10 @@ static int get_process_link_contents(const char *proc_file, char **name) { assert(name); r = readlink_malloc(proc_file, name); + if (r == -ENOENT) + return -ESRCH; if (r < 0) - return r == -ENOENT ? -ESRCH : r; + return r; return 0; } @@ -253,8 +269,11 @@ static int get_process_id(pid_t pid, const char *field, uid_t *uid) { p = procfs_file_alloca(pid, "status"); f = fopen(p, "re"); - if (!f) + if (!f) { + if (errno == ENOENT) + return -ESRCH; return -errno; + } FOREACH_LINE(line, f, return -errno) { char *l; @@ -316,8 +335,11 @@ int get_process_environ(pid_t pid, char **env) { p = procfs_file_alloca(pid, "environ"); f = fopen(p, "re"); - if (!f) + if (!f) { + if (errno == ENOENT) + return -ESRCH; return -errno; + } while ((c = fgetc(f)) != EOF) { if (!GREEDY_REALLOC(outcome, allocated, sz + 5)) @@ -355,6 +377,8 @@ int get_parent_of_pid(pid_t pid, pid_t *_ppid) { p = procfs_file_alloca(pid, "stat"); r = read_one_line_file(p, &line); + if (r == -ENOENT) + return -ESRCH; if (r < 0) return r; @@ -475,8 +499,11 @@ int getenv_for_pid(pid_t pid, const char *field, char **_value) { path = procfs_file_alloca(pid, "environ"); f = fopen(path, "re"); - if (!f) + if (!f) { + if (errno == ENOENT) + return -ESRCH; return -errno; + } l = strlen(field); r = 0; @@ -535,7 +562,7 @@ bool pid_is_alive(pid_t pid) { return false; r = get_process_state(pid); - if (r == -ENOENT || r == 'Z') + if (r == -ESRCH || r == 'Z') return false; return true; |